13531697384 has 16 divisors (see below), whose sum is σ = 25373412420. Its totient is φ = 6765454080.

The previous prime is 13531697369. The next prime is 13531697401. The reversal of 13531697384 is 48379613531.

It can be written as a sum of positive squares in 2 ways, for example, as 12718877284 + 812820100 = 112778^2 + 28510^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138464 + ... + 215024.

Almost surely, 2^13531697384 is an apocalyptic number.

It is an amenable number.

13531697384 is a deficient number, since it is larger than the sum of its proper divisors (11841715036).

13531697384 is a wasteful number, since it uses less digits than its factorization.

13531697384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98660 (or 98656 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 50.

The spelling of 13531697384 in words is "thirteen billion, five hundred thirty-one million, six hundred ninety-seven thousand, three hundred eighty-four".