28501807632875 has 16 divisors (see below), whose sum is σ = 35582955490368. Its totient is φ = 22793305360000.

The previous prime is 28501807632863. The next prime is 28501807632929. The reversal of 28501807632875 is 57823670810582.

It is not a de Polignac number, because 28501807632875 - 2²⁸ = 28501539197419 is a prime.

It is a super-2 number, since 2×28501807632875² (a number of 28 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 (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40352207 + ... + 41052456.

It is an arithmetic number, because the mean of its divisors is an integer number (2223934718148).

Almost surely, 2^{28501807632875} is an apocalyptic number.

28501807632875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28501807632875 is a deficient number, since it is larger than the sum of its proper divisors (7081147857493).

28501807632875 is an equidigital number, since it uses as much as digits as its factorization.

28501807632875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81407479 (or 81407469 counting only the distinct ones).

The product of its (nonzero) digits is 45158400, while the sum is 62.

The spelling of 28501807632875 in words is "twenty-eight trillion, five hundred one billion, eight hundred seven million, six hundred thirty-two thousand, eight hundred seventy-five".