28275775278050 has 24 divisors (see below), whose sum is σ = 54014372886036. Its totient is φ = 11004626053440.

The previous prime is 28275775278007. The next prime is 28275775278061. The reversal of 28275775278050 is 5087257757282.

It can be written as a sum of positive squares in 6 ways, for example, as 11821418656441 + 16454356621609 = 3438229^2 + 4056397^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7642099577 + ... + 7642103276.

Almost surely, 2^{28275775278050} is an apocalyptic number.

28275775278050 is a deficient number, since it is larger than the sum of its proper divisors (25738597607986).

28275775278050 is a wasteful number, since it uses less digits than its factorization.

28275775278050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15284202902 (or 15284202897 counting only the distinct ones).

The product of its (nonzero) digits is 153664000, while the sum is 65.

The spelling of 28275775278050 in words is "twenty-eight trillion, two hundred seventy-five billion, seven hundred seventy-five million, two hundred seventy-eight thousand, fifty".