20315304051660 has 60 divisors (see below), whose sum is σ = 63729861233808. Its totient is φ = 5417414413344.

The previous prime is 20315304051659. The next prime is 20315304051667. The reversal of 20315304051660 is 6615040351302.

20315304051660 is a `hidden beast` number, since 2 + 0 + 3 + 15 + 30 + 40 + 516 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×20315304051660² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (20315304051667) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6270153952 + ... + 6270157191.

Almost surely, 2^{20315304051660} is an apocalyptic number.

20315304051660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20315304051660 is an abundant number, since it is smaller than the sum of its proper divisors (43414557182148).

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

20315304051660 is a wasteful number, since it uses less digits than its factorization.

20315304051660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12540311164 (or 12540311153 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 20315304051660 in words is "twenty trillion, three hundred fifteen billion, three hundred four million, fifty-one thousand, six hundred sixty".