857214423522 has 18 divisors (see below), whose sum is σ = 1857306428523. Its totient is φ = 285736831812.

The previous prime is 857214423463. The next prime is 857214423557. The reversal of 857214423522 is 225324412758.

857214423522 is a `hidden beast` number, since 8 + 5 + 7 + 214 + 423 + 5 + 2 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 428607211761 + 428607211761 = 654681^2 + 654681^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=654681.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3818973 + ... + 4037199.

Almost surely, 2^857214423522 is an apocalyptic number.

857214423522 is an abundant number, since it is smaller than the sum of its proper divisors (1000092005001).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

857214423522 is an frugal number, since it uses more digits than its factorization.

857214423522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436462 (or 218232 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 45.

The spelling of 857214423522 in words is "eight hundred fifty-seven billion, two hundred fourteen million, four hundred twenty-three thousand, five hundred twenty-two".