13356913577778 has 24 divisors (see below), whose sum is σ = 30463136230800. Its totient is φ = 4217972708664.

The previous prime is 13356913577741. The next prime is 13356913577857. The reversal of 13356913577778 is 87777531965331.

13356913577778 is a `hidden beast` number, since 1 + 3 + 3 + 56 + 91 + 357 + 77 + 78 = 666.

13356913577778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19527651088 + ... + 19527651771.

It is an arithmetic number, because the mean of its divisors is an integer number (1269297342950).

Almost surely, 2^{13356913577778} is an apocalyptic number.

13356913577778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13356913577778 is an abundant number, since it is smaller than the sum of its proper divisors (17106222653022).

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

13356913577778 is a wasteful number, since it uses less digits than its factorization.

13356913577778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39055302886 (or 39055302883 counting only the distinct ones).

The product of its digits is 700131600, while the sum is 72.

The spelling of 13356913577778 in words is "thirteen trillion, three hundred fifty-six billion, nine hundred thirteen million, five hundred seventy-seven thousand, seven hundred seventy-eight".