20016960664 has 16 divisors (see below), whose sum is σ = 37551996720. Its totient is φ = 10003094880.

The previous prime is 20016960661. The next prime is 20016960703. The reversal of 20016960664 is 46606961002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20016960661) 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, 657364 + ... + 687139.

It is an arithmetic number, because the mean of its divisors is an integer number (2346999795).

Almost surely, 2^20016960664 is an apocalyptic number.

It is an amenable number.

20016960664 is a deficient number, since it is larger than the sum of its proper divisors (17535036056).

20016960664 is a wasteful number, since it uses less digits than its factorization.

20016960664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346370 (or 1346366 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The spelling of 20016960664 in words is "twenty billion, sixteen million, nine hundred sixty thousand, six hundred sixty-four".