28275775278056 has 16 divisors (see below), whose sum is σ = 53022506977440. Its totient is φ = 14136440084080.

The previous prime is 28275775278007. The next prime is 28275775278061. The reversal of 28275775278056 is 65087257757282.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180861350 + ... + 181017621.

It is an arithmetic number, because the mean of its divisors is an integer number (3313906686090).

Almost surely, 2^{28275775278056} is an apocalyptic number.

It is an amenable number.

28275775278056 is a deficient number, since it is larger than the sum of its proper divisors (24746731699384).

28275775278056 is a wasteful number, since it uses less digits than its factorization.

28275775278056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361888744 (or 361888740 counting only the distinct ones).

The product of its (nonzero) digits is 921984000, while the sum is 71.

The spelling of 28275775278056 in words is "twenty-eight trillion, two hundred seventy-five billion, seven hundred seventy-five million, two hundred seventy-eight thousand, fifty-six".