8160856699 has 4 divisors (see below), whose sum is σ = 8171581320. Its totient is φ = 8150132080.

The previous prime is 8160856673. The next prime is 8160856729. The reversal of 8160856699 is 9966580618.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8160856699 - 2⁵ = 8160856667 is a prime.

It is a super-2 number, since 2×8160856699² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8160854699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5361169 + ... + 5362690.

It is an arithmetic number, because the mean of its divisors is an integer number (2042895330).

Almost surely, 2^8160856699 is an apocalyptic number.

8160856699 is a deficient number, since it is larger than the sum of its proper divisors (10724621).

8160856699 is a wasteful number, since it uses less digits than its factorization.

8160856699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10724620.

The product of its (nonzero) digits is 5598720, while the sum is 58.

The square root of 8160856699 is about 90337.4601093035. The cubic root of 8160856699 is about 2013.3158719381.

The spelling of 8160856699 in words is "eight billion, one hundred sixty million, eight hundred fifty-six thousand, six hundred ninety-nine".