265203478456 has 32 divisors (see below), whose sum is σ = 575140083840. Its totient is φ = 112289250528.

The previous prime is 265203478451. The next prime is 265203478471. The reversal of 265203478456 is 654874302562.

It is a super-2 number, since 2×265203478456² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265203478451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28524126 + ... + 28533421.

It is an arithmetic number, because the mean of its divisors is an integer number (17973127620).

Almost surely, 2^265203478456 is an apocalyptic number.

It is an amenable number.

265203478456 is an abundant number, since it is smaller than the sum of its proper divisors (309936605384).

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

265203478456 is a wasteful number, since it uses less digits than its factorization.

265203478456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57057643 (or 57057639 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 52.

The spelling of 265203478456 in words is "two hundred sixty-five billion, two hundred three million, four hundred seventy-eight thousand, four hundred fifty-six".