20116616464 has 20 divisors (see below), whose sum is σ = 44543936704. Its totient is φ = 8621407008.

The previous prime is 20116616449. The next prime is 20116616467. The reversal of 20116616464 is 46461661102.

It is not an unprimeable number, because it can be changed into a prime (20116616467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89806212 + ... + 89806435.

Almost surely, 2^20116616464 is an apocalyptic number.

It is an amenable number.

20116616464 is an abundant number, since it is smaller than the sum of its proper divisors (24427320240).

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

20116616464 is a wasteful number, since it uses less digits than its factorization.

20116616464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179612662 (or 179612656 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 20116616464 in words is "twenty billion, one hundred sixteen million, six hundred sixteen thousand, four hundred sixty-four".