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23021643345540 = 223571492113174101
BaseRepresentation
bin1010011110000001001001…
…10111111010111010000100
310000111211212220111122122020
411033000210313322322010
511004141311144024130
6120543555201403140
74564154532463530
oct517004467727204
9100454786448566
1023021643345540
11737647354a644
1226b98b99394b0
13cacc15abc878
145983797b4bc0
1529dca4757e10
hex14f024dfae84

23021643345540 has 192 divisors, whose sum is σ = 74199208204800. Its totient is φ = 5224270233600.

The previous prime is 23021643345523. The next prime is 23021643345581. The reversal of 23021643345540 is 4554334612032.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 23021643345492 and 23021643345501.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 132144490 + ... + 132318590.

It is an arithmetic number, because the mean of its divisors is an integer number (386454209400).

Almost surely, 223021643345540 is an apocalyptic number.

23021643345540 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 23021643345540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37099604102400).

23021643345540 is an abundant number, since it is smaller than the sum of its proper divisors (51177564859260).

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

23021643345540 is a wasteful number, since it uses less digits than its factorization.

23021643345540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176382 (or 176380 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 42.

Adding to 23021643345540 its reverse (4554334612032), we get a palindrome (27575977957572).

The spelling of 23021643345540 in words is "twenty-three trillion, twenty-one billion, six hundred forty-three million, three hundred forty-five thousand, five hundred forty".