20669759675 has 12 divisors (see below), whose sum is σ = 25826158776. Its totient is φ = 16409577600.

The previous prime is 20669759573. The next prime is 20669759701. The reversal of 20669759675 is 57695796602.

It is not a de Polignac number, because 20669759675 - 2¹⁸ = 20669497531 is a prime.

It is a super-2 number, since 2×20669759675² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3152414 + ... + 3158963.

It is an arithmetic number, because the mean of its divisors is an integer number (2152179898).

Almost surely, 2^20669759675 is an apocalyptic number.

20669759675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20669759675 is a deficient number, since it is larger than the sum of its proper divisors (5156399101).

20669759675 is a wasteful number, since it uses less digits than its factorization.

20669759675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6311518 (or 6311513 counting only the distinct ones).

The product of its (nonzero) digits is 42865200, while the sum is 62.

The spelling of 20669759675 in words is "twenty billion, six hundred sixty-nine million, seven hundred fifty-nine thousand, six hundred seventy-five".