265201660226440 has 32 divisors (see below), whose sum is σ = 681947126297280. Its totient is φ = 90926283506112.

The previous prime is 265201660226431. The next prime is 265201660226453. The reversal of 265201660226440 is 44622066102562.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 473574392982 + ... + 473574393541.

It is an arithmetic number, because the mean of its divisors is an integer number (21310847696790).

Almost surely, 2^{265201660226440} is an apocalyptic number.

265201660226440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

265201660226440 is an abundant number, since it is smaller than the sum of its proper divisors (416745466070840).

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

265201660226440 is a wasteful number, since it uses less digits than its factorization.

265201660226440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947148786541 (or 947148786537 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 46.

The spelling of 265201660226440 in words is "two hundred sixty-five trillion, two hundred one billion, six hundred sixty million, two hundred twenty-six thousand, four hundred forty".