16387580764538 has 16 divisors (see below), whose sum is σ = 25181885486016. Its totient is φ = 7993634312160.

The previous prime is 16387580764537. The next prime is 16387580764543. The reversal of 16387580764538 is 83546708578361.

It is not an unprimeable number, because it can be changed into a prime (16387580764531) 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, 1692206 + ... + 5969817.

It is an arithmetic number, because the mean of its divisors is an integer number (1573867842876).

Almost surely, 2^{16387580764538} is an apocalyptic number.

16387580764538 is a deficient number, since it is larger than the sum of its proper divisors (8794304721478).

16387580764538 is a wasteful number, since it uses less digits than its factorization.

16387580764538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7688149.

The product of its (nonzero) digits is 812851200, while the sum is 71.

The spelling of 16387580764538 in words is "sixteen trillion, three hundred eighty-seven billion, five hundred eighty million, seven hundred sixty-four thousand, five hundred thirty-eight".