857321768936 has 8 divisors (see below), whose sum is σ = 1607478316770. Its totient is φ = 428660884464.

The previous prime is 857321768909. The next prime is 857321769089. The reversal of 857321768936 is 639867123758.

857321768936 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 850249968100 + 7071800836 = 922090^2 + 84094^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53582610551 + ... + 53582610566.

Almost surely, 2^857321768936 is an apocalyptic number.

It is an amenable number.

857321768936 is a deficient number, since it is larger than the sum of its proper divisors (750156547834).

857321768936 is a wasteful number, since it uses less digits than its factorization.

857321768936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107165221123 (or 107165221119 counting only the distinct ones).

The product of its digits is 91445760, while the sum is 65.

The spelling of 857321768936 in words is "eight hundred fifty-seven billion, three hundred twenty-one million, seven hundred sixty-eight thousand, nine hundred thirty-six".