13770429931648 has 64 divisors (see below), whose sum is σ = 29544744159000. Its totient is φ = 6355321970688.

The previous prime is 13770429931633. The next prime is 13770429931679. The reversal of 13770429931648 is 84613992407731.

It can be written as a sum of positive squares in 4 ways, for example, as 7211545026624 + 6558884905024 = 2685432^2 + 2561032^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a self number, because there is not a number n which added to its sum of digits gives 13770429931648.

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, 43761178 + ... + 44074726.

Almost surely, 2^{13770429931648} is an apocalyptic number.

It is an amenable number.

13770429931648 is an abundant number, since it is smaller than the sum of its proper divisors (15774314227352).

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

13770429931648 is a wasteful number, since it uses less digits than its factorization.

13770429931648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339969 (or 339957 counting only the distinct ones).

The product of its (nonzero) digits is 54867456, while the sum is 64.

The spelling of 13770429931648 in words is "thirteen trillion, seven hundred seventy billion, four hundred twenty-nine million, nine hundred thirty-one thousand, six hundred forty-eight".