168700331522 has 18 divisors (see below), whose sum is σ = 254071392393. Its totient is φ = 84011232784.

The previous prime is 168700331507. The next prime is 168700331537. The reversal of 168700331522 is 225133007861.

It is an interprime number because it is at equal distance from previous prime (168700331507) and next prime (168700331537).

It can be written as a sum of positive squares in 2 ways, for example, as 139129746001 + 29570585521 = 373001^2 + 171961^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=290431.

It is a Duffinian number.

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, 208529054 + ... + 208529862.

Almost surely, 2^168700331522 is an apocalyptic number.

168700331522 is a deficient number, since it is larger than the sum of its proper divisors (85371060871).

168700331522 is an frugal number, since it uses more digits than its factorization.

168700331522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2338 (or 1170 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 168700331522 in words is "one hundred sixty-eight billion, seven hundred million, three hundred thirty-one thousand, five hundred twenty-two".