857093091994 has 8 divisors (see below), whose sum is σ = 1320386655348. Its totient is φ = 416964206880.

The previous prime is 857093091983. The next prime is 857093092007. The reversal of 857093091994 is 499190390758.

It can be written as a sum of positive squares in 2 ways, for example, as 856633547025 + 459544969 = 925545^2 + 21437^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5791169467 + ... + 5791169614.

Almost surely, 2^857093091994 is an apocalyptic number.

857093091994 is a deficient number, since it is larger than the sum of its proper divisors (463293563354).

857093091994 is a wasteful number, since it uses less digits than its factorization.

857093091994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11582339120.

The product of its (nonzero) digits is 22044960, while the sum is 64.

The spelling of 857093091994 in words is "eight hundred fifty-seven billion, ninety-three million, ninety-one thousand, nine hundred ninety-four".