20688752088 has 48 divisors (see below), whose sum is σ = 56609705880. Its totient is φ = 6825153024.

The previous prime is 20688752083. The next prime is 20688752101. The reversal of 20688752088 is 88025788602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20688752083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1474170 + ... + 1488137.

Almost surely, 2^20688752088 is an apocalyptic number.

It is an amenable number.

20688752088 is an abundant number, since it is smaller than the sum of its proper divisors (35920953792).

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

20688752088 is a wasteful number, since it uses less digits than its factorization.

20688752088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2962416 (or 2962409 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 54.

The spelling of 20688752088 in words is "twenty billion, six hundred eighty-eight million, seven hundred fifty-two thousand, eighty-eight".