13287637238 has 16 divisors (see below), whose sum is σ = 20025061056. Its totient is φ = 6612640320.

The previous prime is 13287637201. The next prime is 13287637267. The reversal of 13287637238 is 83273678231.

It is a super-2 number, since 2×13287637238² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 1688120 + ... + 1695972.

It is an arithmetic number, because the mean of its divisors is an integer number (1251566316).

Almost surely, 2^13287637238 is an apocalyptic number.

13287637238 is a deficient number, since it is larger than the sum of its proper divisors (6737423818).

13287637238 is a wasteful number, since it uses less digits than its factorization.

13287637238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11719.

The product of its digits is 2032128, while the sum is 50.

The spelling of 13287637238 in words is "thirteen billion, two hundred eighty-seven million, six hundred thirty-seven thousand, two hundred thirty-eight".