28791132177104 has 40 divisors (see below), whose sum is σ = 60854458964160. Its totient is φ = 13086776102400.

The previous prime is 28791132177047. The next prime is 28791132177163. The reversal of 28791132177104 is 40177123119782.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24854984 + ... + 25987544.

It is an arithmetic number, because the mean of its divisors is an integer number (1521361474104).

Almost surely, 2^{28791132177104} is an apocalyptic number.

It is an amenable number.

28791132177104 is an abundant number, since it is smaller than the sum of its proper divisors (32063326787056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28791132177104 is a wasteful number, since it uses less digits than its factorization.

28791132177104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277019 (or 1277013 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 53.

The spelling of 28791132177104 in words is "twenty-eight trillion, seven hundred ninety-one billion, one hundred thirty-two million, one hundred seventy-seven thousand, one hundred four".