13521477864 has 32 divisors (see below), whose sum is σ = 34119623520. Its totient is φ = 4465035456.

The previous prime is 13521477859. The next prime is 13521477883. The reversal of 13521477864 is 46877412531.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

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, 2630119 + ... + 2635254.

It is an arithmetic number, because the mean of its divisors is an integer number (1066238235).

Almost surely, 2^13521477864 is an apocalyptic number.

It is an amenable number.

13521477864 is an abundant number, since it is smaller than the sum of its proper divisors (20598145656).

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

13521477864 is a wasteful number, since it uses less digits than its factorization.

13521477864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5265489 (or 5265485 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 48.

The spelling of 13521477864 in words is "thirteen billion, five hundred twenty-one million, four hundred seventy-seven thousand, eight hundred sixty-four".