20009992360 has 32 divisors (see below), whose sum is σ = 45114975360. Its totient is φ = 7987553856.

The previous prime is 20009992339. The next prime is 20009992361. The reversal of 20009992360 is 6329990002.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (20009992361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494124 + ... + 533083.

It is an arithmetic number, because the mean of its divisors is an integer number (1409842980).

Almost surely, 2^20009992360 is an apocalyptic number.

20009992360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20009992360 is an abundant number, since it is smaller than the sum of its proper divisors (25104983000).

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

20009992360 is a wasteful number, since it uses less digits than its factorization.

20009992360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027705 (or 1027701 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 40.

The spelling of 20009992360 in words is "twenty billion, nine million, nine hundred ninety-two thousand, three hundred sixty".