20565500675 has 24 divisors (see below), whose sum is σ = 25615760784. Its totient is φ = 16378652160.

The previous prime is 20565500629. The next prime is 20565500689. The reversal of 20565500675 is 57600556502.

It is not a de Polignac number, because 20565500675 - 2⁸ = 20565500419 is a prime.

It is a Duffinian number.

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, 9334124 + ... + 9336326.

It is an arithmetic number, because the mean of its divisors is an integer number (1067323366).

Almost surely, 2^20565500675 is an apocalyptic number.

20565500675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20565500675 is a deficient number, since it is larger than the sum of its proper divisors (5050260109).

20565500675 is a wasteful number, since it uses less digits than its factorization.

20565500675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3719 (or 3714 counting only the distinct ones).

The product of its (nonzero) digits is 315000, while the sum is 41.

The spelling of 20565500675 in words is "twenty billion, five hundred sixty-five million, five hundred thousand, six hundred seventy-five".