1265918332364 has 48 divisors (see below), whose sum is σ = 2556113898240. Its totient is φ = 537336607680.

The previous prime is 1265918332363. The next prime is 1265918332373. The reversal of 1265918332364 is 4632338195621.

It is not an unprimeable number, because it can be changed into a prime (1265918332361) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 12950954 + ... + 13048334.

It is an arithmetic number, because the mean of its divisors is an integer number (53252372880).

Almost surely, 2^{1265918332364} is an apocalyptic number.

1265918332364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1265918332364 is an abundant number, since it is smaller than the sum of its proper divisors (1290195565876).

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

1265918332364 is a wasteful number, since it uses less digits than its factorization.

1265918332364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101838 (or 101836 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 53.

The spelling of 1265918332364 in words is "one trillion, two hundred sixty-five billion, nine hundred eighteen million, three hundred thirty-two thousand, three hundred sixty-four".