13287197684 has 12 divisors (see below), whose sum is σ = 23513861700. Its totient is φ = 6568951488.

The previous prime is 13287197663. The next prime is 13287197717. The reversal of 13287197684 is 48679178231.

It can be written as a sum of positive squares in 2 ways, for example, as 5592048400 + 7695149284 = 74780^2 + 87722^2 .

It is a congruent number.

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, 18661439 + ... + 18662150.

It is an arithmetic number, because the mean of its divisors is an integer number (1959488475).

Almost surely, 2^13287197684 is an apocalyptic number.

It is an amenable number.

13287197684 is a deficient number, since it is larger than the sum of its proper divisors (10226664016).

13287197684 is a wasteful number, since it uses less digits than its factorization.

13287197684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37323682 (or 37323680 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 56.

The spelling of 13287197684 in words is "thirteen billion, two hundred eighty-seven million, one hundred ninety-seven thousand, six hundred eighty-four".