265009867155 has 384 divisors, whose sum is σ = 583050700800. Its totient is φ = 114247480320.

The previous prime is 265009867147. The next prime is 265009867247. The reversal of 265009867155 is 551768900562.

265009867155 is a `hidden beast` number, since 2 + 6 + 500 + 9 + 86 + 7 + 1 + 55 = 666.

It is not a de Polignac number, because 265009867155 - 2³ = 265009867147 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 738188866 + ... + 738189224.

It is an arithmetic number, because the mean of its divisors is an integer number (1518361200).

Almost surely, 2^265009867155 is an apocalyptic number.

265009867155 is an abundant number, since it is smaller than the sum of its proper divisors (318040833645).

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

265009867155 is a wasteful number, since it uses less digits than its factorization.

265009867155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 54.

The spelling of 265009867155 in words is "two hundred sixty-five billion, nine million, eight hundred sixty-seven thousand, one hundred fifty-five".