265155117660 has 72 divisors (see below), whose sum is σ = 804383654256. Its totient is φ = 70701016320.

The previous prime is 265155117659. The next prime is 265155117673. The reversal of 265155117660 is 66711551562.

It is a happy number.

265155117660 is a `hidden beast` number, since 2 + 6 + 5 + 1 + 5 + 511 + 76 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1892752 + ... + 2028008.

It is an arithmetic number, because the mean of its divisors is an integer number (11171995198).

Almost surely, 2^265155117660 is an apocalyptic number.

265155117660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

265155117660 is an abundant number, since it is smaller than the sum of its proper divisors (539228536596).

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

265155117660 is a wasteful number, since it uses less digits than its factorization.

265155117660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146163 (or 146158 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

The spelling of 265155117660 in words is "two hundred sixty-five billion, one hundred fifty-five million, one hundred seventeen thousand, six hundred sixty".