28451592975 has 48 divisors (see below), whose sum is σ = 50951551392. Its totient is φ = 13925890560.

The previous prime is 28451592937. The next prime is 28451593007. The reversal of 28451592975 is 57929515482.

It is a Cunningham number, because it is equal to 168676²-1.

It is not a de Polignac number, because 28451592975 - 2⁷ = 28451592847 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84337 + ... + 253013.

It is an arithmetic number, because the mean of its divisors is an integer number (1061490654).

Almost surely, 2^28451592975 is an apocalyptic number.

28451592975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28451592975 is a deficient number, since it is larger than the sum of its proper divisors (22499958417).

28451592975 is a wasteful number, since it uses less digits than its factorization.

28451592975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168876 (or 168871 counting only the distinct ones).

The product of its digits is 9072000, while the sum is 57.

The spelling of 28451592975 in words is "twenty-eight billion, four hundred fifty-one million, five hundred ninety-two thousand, nine hundred seventy-five".