168220099672 has 16 divisors (see below), whose sum is σ = 320583387600. Its totient is φ = 82731196320.

The previous prime is 168220099667. The next prime is 168220099681. The reversal of 168220099672 is 276990022861.

It is a super-2 number, since 2×168220099672² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 172356172 + ... + 172357147.

It is an arithmetic number, because the mean of its divisors is an integer number (20036461725).

Almost surely, 2^168220099672 is an apocalyptic number.

It is an amenable number.

168220099672 is a deficient number, since it is larger than the sum of its proper divisors (152363287928).

168220099672 is a wasteful number, since it uses less digits than its factorization.

168220099672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344713386 (or 344713382 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 168220099672 in words is "one hundred sixty-eight billion, two hundred twenty million, ninety-nine thousand, six hundred seventy-two".