28107801075 has 48 divisors (see below), whose sum is σ = 46794116096. Its totient is φ = 14887065600.

The previous prime is 28107801049. The next prime is 28107801079. The reversal of 28107801075 is 57010870182.

It is not a de Polignac number, because 28107801075 - 2¹² = 28107796979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28107801079) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10521990 + ... + 10524660.

Almost surely, 2^28107801075 is an apocalyptic number.

28107801075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28107801075 is a deficient number, since it is larger than the sum of its proper divisors (18686315021).

28107801075 is a wasteful number, since it uses less digits than its factorization.

28107801075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3604 (or 3599 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 39.

The spelling of 28107801075 in words is "twenty-eight billion, one hundred seven million, eight hundred one thousand, seventy-five".