20307149675 has 12 divisors (see below), whose sum is σ = 25188532920. Its totient is φ = 16240773120.

The previous prime is 20307149663. The next prime is 20307149677. The reversal of 20307149675 is 57694170302.

It is not a de Polignac number, because 20307149675 - 2⁴ = 20307149659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20307149677) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38777 + ... + 205226.

It is an arithmetic number, because the mean of its divisors is an integer number (2099044410).

Almost surely, 2^20307149675 is an apocalyptic number.

20307149675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20307149675 is a deficient number, since it is larger than the sum of its proper divisors (4881383245).

20307149675 is a wasteful number, since it uses less digits than its factorization.

20307149675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247342 (or 247337 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 44.

The spelling of 20307149675 in words is "twenty billion, three hundred seven million, one hundred forty-nine thousand, six hundred seventy-five".