20959513291675 has 24 divisors (see below), whose sum is σ = 29771221943456. Its totient is φ = 14339045399040.

The previous prime is 20959513291643. The next prime is 20959513291757. The reversal of 20959513291675 is 57619231595902.

It is not a de Polignac number, because 20959513291675 - 2⁵ = 20959513291643 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 138225204 + ... + 138376753.

Almost surely, 2^{20959513291675} is an apocalyptic number.

20959513291675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20959513291675 is a deficient number, since it is larger than the sum of its proper divisors (8811708651781).

20959513291675 is a wasteful number, since it uses less digits than its factorization.

20959513291675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276602407 (or 276602402 counting only the distinct ones).

The product of its (nonzero) digits is 45927000, while the sum is 64.

The spelling of 20959513291675 in words is "twenty trillion, nine hundred fifty-nine billion, five hundred thirteen million, two hundred ninety-one thousand, six hundred seventy-five".