13527778956 has 24 divisors (see below), whose sum is σ = 31567864944. Its totient is φ = 4508824320.

The previous prime is 13527778949. The next prime is 13527778991. The reversal of 13527778956 is 65987772531.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 13527778956.

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, 90496 + ... + 187736.

It is an arithmetic number, because the mean of its divisors is an integer number (1315327706).

Almost surely, 2^13527778956 is an apocalyptic number.

It is an amenable number.

13527778956 is an abundant number, since it is smaller than the sum of its proper divisors (18040085988).

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

13527778956 is a wasteful number, since it uses less digits than its factorization.

13527778956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108841 (or 108839 counting only the distinct ones).

The product of its digits is 22226400, while the sum is 60.

The spelling of 13527778956 in words is "thirteen billion, five hundred twenty-seven million, seven hundred seventy-eight thousand, nine hundred fifty-six".