28976581845 has 32 divisors (see below), whose sum is σ = 54225187200. Its totient is φ = 14640797952.

The previous prime is 28976581813. The next prime is 28976581853. The reversal of 28976581845 is 54818567982.

28976581845 is a `hidden beast` number, since 2 + 8 + 9 + 7 + 6 + 581 + 8 + 45 = 666.

It is not a de Polignac number, because 28976581845 - 2⁵ = 28976581813 is a prime.

It is a congruent number.

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, 5645892 + ... + 5651021.

It is an arithmetic number, because the mean of its divisors is an integer number (1694537100).

Almost surely, 2^28976581845 is an apocalyptic number.

It is an amenable number.

28976581845 is a deficient number, since it is larger than the sum of its proper divisors (25248605355).

28976581845 is a wasteful number, since it uses less digits than its factorization.

28976581845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11296946 (or 11296940 counting only the distinct ones).

The product of its digits is 38707200, while the sum is 63.

The spelling of 28976581845 in words is "twenty-eight billion, nine hundred seventy-six million, five hundred eighty-one thousand, eight hundred forty-five".