20315156675 has 24 divisors (see below), whose sum is σ = 27488634960. Its totient is φ = 14770483200.

The previous prime is 20315156633. The next prime is 20315156677. The reversal of 20315156675 is 57665151302.

It is not a de Polignac number, because 20315156675 - 2¹² = 20315152579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20315156677) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1232891 + ... + 1249259.

It is an arithmetic number, because the mean of its divisors is an integer number (1145359790).

Almost surely, 2^20315156675 is an apocalyptic number.

20315156675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20315156675 is a deficient number, since it is larger than the sum of its proper divisors (7173478285).

20315156675 is a wasteful number, since it uses less digits than its factorization.

20315156675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20903 (or 20898 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 41.

The spelling of 20315156675 in words is "twenty billion, three hundred fifteen million, one hundred fifty-six thousand, six hundred seventy-five".