20713893600 has 72 divisors (see below), whose sum is σ = 67423731480. Its totient is φ = 5523704320.

The previous prime is 20713893583. The next prime is 20713893611. The reversal of 20713893600 is 639831702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4312995 + ... + 4317794.

It is an arithmetic number, because the mean of its divisors is an integer number (936440715).

Almost surely, 2^20713893600 is an apocalyptic number.

20713893600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20713893600 is an abundant number, since it is smaller than the sum of its proper divisors (46709837880).

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

20713893600 is a wasteful number, since it uses less digits than its factorization.

20713893600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8630812 (or 8630799 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The spelling of 20713893600 in words is "twenty billion, seven hundred thirteen million, eight hundred ninety-three thousand, six hundred".