20500862380 has 12 divisors (see below), whose sum is σ = 43051811040. Its totient is φ = 8200344944.

The previous prime is 20500862339. The next prime is 20500862401. The reversal of 20500862380 is 8326800502.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 512521540 + ... + 512521579.

It is an arithmetic number, because the mean of its divisors is an integer number (3587650920).

Almost surely, 2^20500862380 is an apocalyptic number.

20500862380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20500862380 is an abundant number, since it is smaller than the sum of its proper divisors (22550948660).

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

20500862380 is a wasteful number, since it uses less digits than its factorization.

20500862380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025043128 (or 1025043126 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 20500862380 in words is "twenty billion, five hundred million, eight hundred sixty-two thousand, three hundred eighty".