22157041685 has 8 divisors (see below), whose sum is σ = 26596456920. Its totient is φ = 17720295424.

The previous prime is 22157041679. The next prime is 22157041703. The reversal of 22157041685 is 58614075122.

It can be written as a sum of positive squares in 4 ways, for example, as 4446489124 + 17710552561 = 66682^2 + 133081^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 22157041685 - 2⁸ = 22157041429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 648932 + ... + 682221.

It is an arithmetic number, because the mean of its divisors is an integer number (3324557115).

Almost surely, 2^22157041685 is an apocalyptic number.

It is an amenable number.

22157041685 is a deficient number, since it is larger than the sum of its proper divisors (4439415235).

22157041685 is a wasteful number, since it uses less digits than its factorization.

22157041685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334487.

The product of its (nonzero) digits is 134400, while the sum is 41.

The spelling of 22157041685 in words is "twenty-two billion, one hundred fifty-seven million, forty-one thousand, six hundred eighty-five".