28880966979 has 6 divisors (see below), whose sum is σ = 41716952316. Its totient is φ = 19253977980.

The previous prime is 28880966923. The next prime is 28880966981. The reversal of 28880966979 is 97966908882.

It is not a de Polignac number, because 28880966979 - 2¹⁶ = 28880901443 is a prime.

It is a super-2 number, since 2×28880966979² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28880966479) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1604498157 + ... + 1604498174.

It is an arithmetic number, because the mean of its divisors is an integer number (6952825386).

Almost surely, 2^28880966979 is an apocalyptic number.

28880966979 is a deficient number, since it is larger than the sum of its proper divisors (12835985337).

28880966979 is a wasteful number, since it uses less digits than its factorization.

28880966979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3208996337 (or 3208996334 counting only the distinct ones).

The product of its (nonzero) digits is 188116992, while the sum is 72.

The spelling of 28880966979 in words is "twenty-eight billion, eight hundred eighty million, nine hundred sixty-six thousand, nine hundred seventy-nine".