7108685857 has 32 divisors (see below), whose sum is σ = 9047736320. Its totient is φ = 5433168960.

The previous prime is 7108685851. The next prime is 7108685861. The reversal of 7108685857 is 7585868017.

It is a cyclic number.

It is not a de Polignac number, because 7108685857 - 2²³ = 7100297249 is a prime.

It is a super-2 number, since 2×7108685857² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7108685798 and 7108685807.

It is not an unprimeable number, because it can be changed into a prime (7108685851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1811944 + ... + 1815862.

It is an arithmetic number, because the mean of its divisors is an integer number (282741760).

Almost surely, 2^7108685857 is an apocalyptic number.

It is an amenable number.

7108685857 is a deficient number, since it is larger than the sum of its proper divisors (1939050463).

7108685857 is a wasteful number, since it uses less digits than its factorization.

7108685857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4613.

The product of its (nonzero) digits is 3763200, while the sum is 55.

The square root of 7108685857 is about 84313.0230569394. The cubic root of 7108685857 is about 1922.7807883628.

The spelling of 7108685857 in words is "seven billion, one hundred eight million, six hundred eighty-five thousand, eight hundred fifty-seven".