28099929178875 has 64 divisors (see below), whose sum is σ = 48024212655744. Its totient is φ = 14580918950400.

The previous prime is 28099929178847. The next prime is 28099929178879. The reversal of 28099929178875 is 57887192999082.

It is not a de Polignac number, because 28099929178875 - 2¹⁷ = 28099929047803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28099929178879) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 493879929 + ... + 493936821.

It is an arithmetic number, because the mean of its divisors is an integer number (750378322746).

Almost surely, 2^{28099929178875} is an apocalyptic number.

28099929178875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28099929178875 is a deficient number, since it is larger than the sum of its proper divisors (19924283476869).

28099929178875 is a wasteful number, since it uses less digits than its factorization.

28099929178875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92545 (or 92535 counting only the distinct ones).

The product of its (nonzero) digits is 3292047360, while the sum is 84.

The spelling of 28099929178875 in words is "twenty-eight trillion, ninety-nine billion, nine hundred twenty-nine million, one hundred seventy-eight thousand, eight hundred seventy-five".