265120305646555 has 16 divisors (see below), whose sum is σ = 319750276708800. Its totient is φ = 211025685860352.

The previous prime is 265120305646531. The next prime is 265120305646619. The reversal of 265120305646555 is 555646503021562.

It is a cyclic number.

It is not a de Polignac number, because 265120305646555 - 2³⁵ = 265085945908187 is a prime.

It is a super-2 number, since 2×265120305646555² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 265120305646496 and 265120305646505.

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, 41577787 + ... + 47528443.

It is an arithmetic number, because the mean of its divisors is an integer number (19984392294300).

Almost surely, 2^{265120305646555} is an apocalyptic number.

265120305646555 is a deficient number, since it is larger than the sum of its proper divisors (54629971062245).

265120305646555 is a wasteful number, since it uses less digits than its factorization.

265120305646555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5995638.

The product of its (nonzero) digits is 32400000, while the sum is 55.

The spelling of 265120305646555 in words is "two hundred sixty-five trillion, one hundred twenty billion, three hundred five million, six hundred forty-six thousand, five hundred fifty-five".