816112857 has 16 divisors (see below), whose sum is σ = 1245186432. Its totient is φ = 465755520.

The previous prime is 816112819. The next prime is 816112873. The reversal of 816112857 is 758211618.

It is not a de Polignac number, because 816112857 - 2⁶ = 816112793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (816112807) 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, 7644 + ... + 41117.

It is an arithmetic number, because the mean of its divisors is an integer number (77824152).

Almost surely, 2^816112857 is an apocalyptic number.

It is an amenable number.

816112857 is a deficient number, since it is larger than the sum of its proper divisors (429073575).

816112857 is a wasteful number, since it uses less digits than its factorization.

816112857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49568.

The product of its digits is 26880, while the sum is 39.

The square root of 816112857 is about 28567.6890384924. The cubic root of 816112857 is about 934.5088241592.

The spelling of 816112857 in words is "eight hundred sixteen million, one hundred twelve thousand, eight hundred fifty-seven".