266730636480 has 1792 divisors, whose sum is σ = 1189233819648. Its totient is φ = 48955392000.

The previous prime is 266730636479. The next prime is 266730636493. The reversal of 266730636480 is 84636037662.

It is a super-2 number, since 2×266730636480² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 1597189357 + ... + 1597189523.

It is an arithmetic number, because the mean of its divisors is an integer number (663634944).

Almost surely, 2^266730636480 is an apocalyptic number.

266730636480 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 266730636480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (594616909824).

266730636480 is an abundant number, since it is smaller than the sum of its proper divisors (922503183168).

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

266730636480 is a wasteful number, since it uses less digits than its factorization.

266730636480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 51.

The spelling of 266730636480 in words is "two hundred sixty-six billion, seven hundred thirty million, six hundred thirty-six thousand, four hundred eighty".