8157812704 has 24 divisors (see below), whose sum is σ = 16070608008. Its totient is φ = 4076388480.

The previous prime is 8157812669. The next prime is 8157812711. The reversal of 8157812704 is 4072187518.

It is a super-2 number, since 2×8157812704² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25482 + ... + 130249.

It is an arithmetic number, because the mean of its divisors is an integer number (669608667).

Almost surely, 2^8157812704 is an apocalyptic number.

It is an amenable number.

8157812704 is a deficient number, since it is larger than the sum of its proper divisors (7912795304).

8157812704 is a wasteful number, since it uses less digits than its factorization.

8157812704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157378 (or 157370 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 43.

The square root of 8157812704 is about 90320.6106268110. The cubic root of 8157812704 is about 2013.0655189090.

The spelling of 8157812704 in words is "eight billion, one hundred fifty-seven million, eight hundred twelve thousand, seven hundred four".