20768883588 has 18 divisors (see below), whose sum is σ = 52499122494. Its totient is φ = 6922961184.

The previous prime is 20768883587. The next prime is 20768883601. The reversal of 20768883588 is 88538886702.

It can be written as a sum of positive squares in only one way, i.e., 16505054784 + 4263828804 = 128472^2 + 65298^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (20768883587) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 288456681 + ... + 288456752.

Almost surely, 2^20768883588 is an apocalyptic number.

It is an amenable number.

20768883588 is an abundant number, since it is smaller than the sum of its proper divisors (31730238906).

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

20768883588 is a wasteful number, since it uses less digits than its factorization.

20768883588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576913443 (or 576913438 counting only the distinct ones).

The product of its (nonzero) digits is 41287680, while the sum is 63.

The spelling of 20768883588 in words is "twenty billion, seven hundred sixty-eight million, eight hundred eighty-three thousand, five hundred eighty-eight".