28080761157 has 16 divisors (see below), whose sum is σ = 43409873280. Its totient is φ = 17906571936.

The previous prime is 28080761129. The next prime is 28080761173. The reversal of 28080761157 is 75116708082.

It is a happy number.

28080761157 is a `hidden beast` number, since 28 + 0 + 8 + 0 + 7 + 611 + 5 + 7 = 666.

It is not a de Polignac number, because 28080761157 - 2²⁸ = 27812325701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28080761117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22608688 + ... + 22609929.

It is an arithmetic number, because the mean of its divisors is an integer number (2713117080).

Almost surely, 2^28080761157 is an apocalyptic number.

28080761157 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

28080761157 is a deficient number, since it is larger than the sum of its proper divisors (15329112123).

28080761157 is a wasteful number, since it uses less digits than its factorization.

28080761157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45218649 (or 45218643 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 45.

The spelling of 28080761157 in words is "twenty-eight billion, eighty million, seven hundred sixty-one thousand, one hundred fifty-seven".