15627538464 has 48 divisors (see below), whose sum is σ = 42345596160. Its totient is φ = 5041140480.

The previous prime is 15627538463. The next prime is 15627538469. The reversal of 15627538464 is 46483572651.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (15627538463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2622619 + ... + 2628570.

It is an arithmetic number, because the mean of its divisors is an integer number (882199920).

Almost surely, 2^15627538464 is an apocalyptic number.

It is an amenable number.

15627538464 is an abundant number, since it is smaller than the sum of its proper divisors (26718057696).

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

15627538464 is a wasteful number, since it uses less digits than its factorization.

15627538464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5251233 (or 5251225 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 51.

The spelling of 15627538464 in words is "fifteen billion, six hundred twenty-seven million, five hundred thirty-eight thousand, four hundred sixty-four".