20004389875 has 32 divisors (see below), whose sum is σ = 26612352000. Its totient is φ = 14969167200.

The previous prime is 20004389851. The next prime is 20004389891. The reversal of 20004389875 is 57898340002.

It is not a de Polignac number, because 20004389875 - 2⁵ = 20004389843 is a prime.

It is a super-2 number, since 2×20004389875² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134316 + ... + 240934.

It is an arithmetic number, because the mean of its divisors is an integer number (831636000).

Almost surely, 2^20004389875 is an apocalyptic number.

20004389875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20004389875 is a deficient number, since it is larger than the sum of its proper divisors (6607962125).

20004389875 is a wasteful number, since it uses less digits than its factorization.

20004389875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106732 (or 106722 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 20004389875 in words is "twenty billion, four million, three hundred eighty-nine thousand, eight hundred seventy-five".