168372168722 has 16 divisors (see below), whose sum is σ = 253460692032. Its totient is φ = 83885796720.

The previous prime is 168372168697. The next prime is 168372168763. The reversal of 168372168722 is 227861273861.

It is a super-2 number, since 2×168372168722² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513053 + ... + 774575.

It is an arithmetic number, because the mean of its divisors is an integer number (15841293252).

Almost surely, 2^168372168722 is an apocalyptic number.

168372168722 is a deficient number, since it is larger than the sum of its proper divisors (85088523310).

168372168722 is a wasteful number, since it uses less digits than its factorization.

168372168722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262673.

The product of its digits is 2709504, while the sum is 53.

The spelling of 168372168722 in words is "one hundred sixty-eight billion, three hundred seventy-two million, one hundred sixty-eight thousand, seven hundred twenty-two".