20007076864 has 22 divisors (see below), whose sum is σ = 39994617614. Its totient is φ = 10003537920.

The previous prime is 20007076853. The next prime is 20007076867. The reversal of 20007076864 is 46867070002.

It can be written as a sum of positive squares in only one way, i.e., 16384000000 + 3623076864 = 128000^2 + 60192^2 .

It is not an unprimeable number, because it can be changed into a prime (20007076867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9768057 + ... + 9770104.

Almost surely, 2^20007076864 is an apocalyptic number.

It is an amenable number.

20007076864 is a deficient number, since it is larger than the sum of its proper divisors (19987540750).

20007076864 is an equidigital number, since it uses as much as digits as its factorization.

20007076864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19538181 (or 19538163 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 20007076864 in words is "twenty billion, seven million, seventy-six thousand, eight hundred sixty-four".