265978900056 has 64 divisors (see below), whose sum is σ = 672346015200. Its totient is φ = 87675264000.

The previous prime is 265978900049. The next prime is 265978900079. The reversal of 265978900056 is 650009879562.

265978900056 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 265978899969 and 265978900005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1943316 + ... + 2075676.

Almost surely, 2^265978900056 is an apocalyptic number.

It is an amenable number.

265978900056 is an abundant number, since it is smaller than the sum of its proper divisors (406367115144).

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

265978900056 is a wasteful number, since it uses less digits than its factorization.

265978900056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133300 (or 133296 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 57.

The spelling of 265978900056 in words is "two hundred sixty-five billion, nine hundred seventy-eight million, nine hundred thousand, fifty-six".