28077372116 has 12 divisors (see below), whose sum is σ = 49389990132. Its totient is φ = 13965946368.

The previous prime is 28077372097. The next prime is 28077372121. The reversal of 28077372116 is 61127377082.

It can be written as a sum of positive squares in 2 ways, for example, as 14527480900 + 13549891216 = 120530^2 + 116404^2 .

It is a congruent number.

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, 18184055 + ... + 18185598.

It is an arithmetic number, because the mean of its divisors is an integer number (4115832511).

Almost surely, 2^28077372116 is an apocalyptic number.

It is an amenable number.

28077372116 is a deficient number, since it is larger than the sum of its proper divisors (21312618016).

28077372116 is a wasteful number, since it uses less digits than its factorization.

28077372116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36369850 (or 36369848 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 44.

The spelling of 28077372116 in words is "twenty-eight billion, seventy-seven million, three hundred seventy-two thousand, one hundred sixteen".