265201660156040 has 96 divisors (see below), whose sum is σ = 598454167017600. Its totient is φ = 105770372209920.

The previous prime is 265201660156039. The next prime is 265201660156057. The reversal of 265201660156040 is 40651066102562.

It is a junction number, because it is equal to n+sod(n) for n = 265201660155982 and 265201660156000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18730246481 + ... + 18730260639.

It is an arithmetic number, because the mean of its divisors is an integer number (6233897573100).

Almost surely, 2^{265201660156040} is an apocalyptic number.

265201660156040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

265201660156040 is an abundant number, since it is smaller than the sum of its proper divisors (333252506861560).

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

265201660156040 is a wasteful number, since it uses less digits than its factorization.

265201660156040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17935 (or 17534 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 265201660156040 in words is "two hundred sixty-five trillion, two hundred one billion, six hundred sixty million, one hundred fifty-six thousand, forty".