20797363650 has 48 divisors (see below), whose sum is σ = 58945673664. Its totient is φ = 4753682880.

The previous prime is 20797363621. The next prime is 20797363721. The reversal of 20797363650 is 5636379702.

It is a self number, because there is not a number n which added to its sum of digits gives 20797363650.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9902457 + ... + 9904556.

It is an arithmetic number, because the mean of its divisors is an integer number (1228034868).

Almost surely, 2^20797363650 is an apocalyptic number.

20797363650 is an abundant number, since it is smaller than the sum of its proper divisors (38148310014).

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

20797363650 is a wasteful number, since it uses less digits than its factorization.

20797363650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19807035 (or 19807030 counting only the distinct ones).

The product of its (nonzero) digits is 1428840, while the sum is 48.

The spelling of 20797363650 in words is "twenty billion, seven hundred ninety-seven million, three hundred sixty-three thousand, six hundred fifty".