265380839940 has 48 divisors (see below), whose sum is σ = 746800387200. Its totient is φ = 70412601600.

The previous prime is 265380839929. The next prime is 265380839957. The reversal of 265380839940 is 49938083562.

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, 11101161 + ... + 11125040.

It is an arithmetic number, because the mean of its divisors is an integer number (15558341400).

Almost surely, 2^265380839940 is an apocalyptic number.

265380839940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

265380839940 is an abundant number, since it is smaller than the sum of its proper divisors (481419547260).

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

265380839940 is a wasteful number, since it uses less digits than its factorization.

265380839940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22226412 (or 22226410 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 57.

The spelling of 265380839940 in words is "two hundred sixty-five billion, three hundred eighty million, eight hundred thirty-nine thousand, nine hundred forty".