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266600561040 = 243251173461119
BaseRepresentation
bin1111100001001010100…
…0011011100110010000
3221111010211222201210100
43320102220123212100
513331444220423130
6322250303132400
725155416243622
oct3702250334620
9844124881710
10266600561040
11a3079080490
1243803ba4100
131c1a93a9188
14cc91434c12
156e053ddc60
hex3e12a1b990

266600561040 has 240 divisors, whose sum is σ = 990109486080. Its totient is φ = 63744952320.

The previous prime is 266600561033. The next prime is 266600561047. The reversal of 266600561040 is 40165006662.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (266600561033) and next prime (266600561047).

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 266600560986 and 266600561004.

It is not an unprimeable number, because it can be changed into a prime (266600561047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 347601 + ... + 808719.

It is an arithmetic number, because the mean of its divisors is an integer number (4125456192).

Almost surely, 2266600561040 is an apocalyptic number.

266600561040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266600561040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (495054743040).

266600561040 is an abundant number, since it is smaller than the sum of its proper divisors (723508925040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266600561040 is a wasteful number, since it uses less digits than its factorization.

266600561040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461222 (or 461213 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 266600561040 in words is "two hundred sixty-six billion, six hundred million, five hundred sixty-one thousand, forty".