13534978564 has 6 divisors (see below), whose sum is σ = 23686212494. Its totient is φ = 6767489280.

The previous prime is 13534978543. The next prime is 13534978601. The reversal of 13534978564 is 46587943531.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13523364100 + 11614464 = 116290^2 + 3408^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1691872317 + ... + 1691872324.

Almost surely, 2^13534978564 is an apocalyptic number.

It is an amenable number.

13534978564 is a deficient number, since it is larger than the sum of its proper divisors (10151233930).

13534978564 is a wasteful number, since it uses less digits than its factorization.

13534978564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3383744645 (or 3383744643 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 55.

The spelling of 13534978564 in words is "thirteen billion, five hundred thirty-four million, nine hundred seventy-eight thousand, five hundred sixty-four".