15138407664 has 30 divisors (see below), whose sum is σ = 42366516296. Its totient is φ = 5046135840.

The previous prime is 15138407663. The next prime is 15138407677. The reversal of 15138407664 is 46670483151.

15138407664 is a `hidden beast` number, since 1 + 513 + 8 + 4 + 0 + 76 + 64 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15138407663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52563772 + ... + 52564059.

Almost surely, 2^15138407664 is an apocalyptic number.

It is an amenable number.

15138407664 is an abundant number, since it is smaller than the sum of its proper divisors (27228108632).

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

15138407664 is a wasteful number, since it uses less digits than its factorization.

15138407664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105127845 (or 105127836 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 15138407664 in words is "fifteen billion, one hundred thirty-eight million, four hundred seven thousand, six hundred sixty-four".