856722174098 has 150 divisors (see below), whose sum is σ = 1626386591781. Its totient is φ = 338440948272.

The previous prime is 856722174097. The next prime is 856722174127. The reversal of 856722174098 is 890471227658.

It can be written as a sum of positive squares in 2 ways, for example, as 691197692689 + 165524481409 = 831383^2 + 406847^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=654493.

It is a super-2 number, since 2×856722174098² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (856722174097) by changing a digit.

It is a polite number, since it can be written in 74 ways as a sum of consecutive naturals, for example, 23154653336 + ... + 23154653372.

Almost surely, 2^856722174098 is an apocalyptic number.

856722174098 is a deficient number, since it is larger than the sum of its proper divisors (769664417683).

856722174098 is an frugal number, since it uses more digits than its factorization.

856722174098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 59.

The spelling of 856722174098 in words is "eight hundred fifty-six billion, seven hundred twenty-two million, one hundred seventy-four thousand, ninety-eight".