5016644391638 has 32 divisors (see below), whose sum is σ = 8268518568960. Its totient is φ = 2263817086560.

The previous prime is 5016644391601. The next prime is 5016644391667. The reversal of 5016644391638 is 8361934466105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1341020 + ... + 3439712.

It is an arithmetic number, because the mean of its divisors is an integer number (258391205280).

Almost surely, 2^{5016644391638} is an apocalyptic number.

5016644391638 is a deficient number, since it is larger than the sum of its proper divisors (3251874177322).

5016644391638 is a wasteful number, since it uses less digits than its factorization.

5016644391638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2099492.

The product of its (nonzero) digits is 11197440, while the sum is 56.

The spelling of 5016644391638 in words is "five trillion, sixteen billion, six hundred forty-four million, three hundred ninety-one thousand, six hundred thirty-eight".