857108076766 has 4 divisors (see below), whose sum is σ = 1285662115152. Its totient is φ = 428554038382.

The previous prime is 857108076707. The next prime is 857108076827. The reversal of 857108076766 is 667670801758.

It is a happy number.

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

It is a super-2 number, since 2×857108076766² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214277019190 + ... + 214277019193.

It is an arithmetic number, because the mean of its divisors is an integer number (321415528788).

Almost surely, 2^857108076766 is an apocalyptic number.

857108076766 is a deficient number, since it is larger than the sum of its proper divisors (428554038386).

857108076766 is a wasteful number, since it uses less digits than its factorization.

857108076766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428554038385.

The product of its (nonzero) digits is 23708160, while the sum is 61.

The spelling of 857108076766 in words is "eight hundred fifty-seven billion, one hundred eight million, seventy-six thousand, seven hundred sixty-six".