168642752620 has 96 divisors (see below), whose sum is σ = 360689003136. Its totient is φ = 66225868800.

The previous prime is 168642752611. The next prime is 168642752647. The reversal of 168642752620 is 26257246861.

It is a super-2 number, since 2×168642752620² (a number of 23 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 163571505 + ... + 163572535.

It is an arithmetic number, because the mean of its divisors is an integer number (3757177116).

Almost surely, 2^168642752620 is an apocalyptic number.

168642752620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168642752620 is an abundant number, since it is smaller than the sum of its proper divisors (192046250516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168642752620 is a wasteful number, since it uses less digits than its factorization.

168642752620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771 (or 1769 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 168642752620 in words is "one hundred sixty-eight billion, six hundred forty-two million, seven hundred fifty-two thousand, six hundred twenty".