13187912884 has 12 divisors (see below), whose sum is σ = 23144978500. Its totient is φ = 6575061888.

The previous prime is 13187912797. The next prime is 13187912887. The reversal of 13187912884 is 48821978131.

It can be written as a sum of positive squares in 2 ways, for example, as 12106160784 + 1081752100 = 110028^2 + 32890^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13187912887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4722069 + ... + 4724860.

Almost surely, 2^13187912884 is an apocalyptic number.

It is an amenable number.

13187912884 is a deficient number, since it is larger than the sum of its proper divisors (9957065616).

13187912884 is a wasteful number, since it uses less digits than its factorization.

13187912884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9447282 (or 9447280 counting only the distinct ones).

The product of its digits is 774144, while the sum is 52.

The spelling of 13187912884 in words is "thirteen billion, one hundred eighty-seven million, nine hundred twelve thousand, eight hundred eighty-four".