20315513160 has 96 divisors (see below), whose sum is σ = 66706206840. Its totient is φ = 5361610752.

The previous prime is 20315513149. The next prime is 20315513171. The reversal of 20315513160 is 6131551302.

20315513160 is a `hidden beast` number, since 20 + 3 + 1 + 551 + 31 + 60 = 666.

It is an interprime number because it is at equal distance from previous prime (20315513149) and next prime (20315513171).

It can be written as a sum of positive squares in 4 ways, for example, as 9875986884 + 10439526276 = 99378^2 + 102174^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 255967 + ... + 325806.

Almost surely, 2^20315513160 is an apocalyptic number.

20315513160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20315513160 is an abundant number, since it is smaller than the sum of its proper divisors (46390693680).

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

20315513160 is a wasteful number, since it uses less digits than its factorization.

20315513160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581887 (or 581880 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The spelling of 20315513160 in words is "twenty billion, three hundred fifteen million, five hundred thirteen thousand, one hundred sixty".