20355864360 has 64 divisors (see below), whose sum is σ = 65765105280. Its totient is φ = 5010673920.

The previous prime is 20355864337. The next prime is 20355864407. The reversal of 20355864360 is 6346855302.

It is a super-2 number, since 2×20355864360² (a number of 21 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 6522756 + ... + 6525875.

It is an arithmetic number, because the mean of its divisors is an integer number (1027579770).

Almost surely, 2^20355864360 is an apocalyptic number.

20355864360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20355864360 is an abundant number, since it is smaller than the sum of its proper divisors (45409240920).

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

20355864360 is a wasteful number, since it uses less digits than its factorization.

20355864360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13048658 (or 13048654 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 20355864360 in words is "twenty billion, three hundred fifty-five million, eight hundred sixty-four thousand, three hundred sixty".