20883668264 has 8 divisors (see below), whose sum is σ = 39156878010. Its totient is φ = 10441834128.

The previous prime is 20883668251. The next prime is 20883668287. The reversal of 20883668264 is 46286638802.

It can be written as a sum of positive squares in only one way, i.e., 18128468164 + 2755200100 = 134642^2 + 52490^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×20883668264² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1305229259 + ... + 1305229274.

Almost surely, 2^20883668264 is an apocalyptic number.

It is an amenable number.

20883668264 is a deficient number, since it is larger than the sum of its proper divisors (18273209746).

20883668264 is a wasteful number, since it uses less digits than its factorization.

20883668264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2610458539 (or 2610458535 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 53.

The spelling of 20883668264 in words is "twenty billion, eight hundred eighty-three million, six hundred sixty-eight thousand, two hundred sixty-four".