265742991360 has 1440 divisors, whose sum is σ = 1193427615744. Its totient is φ = 53084160000.

The previous prime is 265742991331. The next prime is 265742991379. The reversal of 265742991360 is 63199247562.

265742991360 is a `hidden beast` number, since 2 + 6 + 574 + 2 + 9 + 9 + 1 + 3 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (1440).

It is a super-2 number, since 2×265742991360² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 265742991297 and 265742991306.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1759887285 + ... + 1759887435.

Almost surely, 2^265742991360 is an apocalyptic number.

265742991360 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 265742991360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (596713807872).

265742991360 is an abundant number, since it is smaller than the sum of its proper divisors (927684624384).

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

265742991360 is a wasteful number, since it uses less digits than its factorization.

265742991360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 54.

The spelling of 265742991360 in words is "two hundred sixty-five billion, seven hundred forty-two million, nine hundred ninety-one thousand, three hundred sixty".