167649442620 has 96 divisors (see below), whose sum is σ = 512365222656. Its totient is φ = 40620672000.

The previous prime is 167649442607. The next prime is 167649442651. The reversal of 167649442620 is 26244946761.

It is a super-2 number, since 2×167649442620² (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 31 ways as a sum of consecutive naturals, for example, 1192020 + ... + 1325220.

It is an arithmetic number, because the mean of its divisors is an integer number (5337137736).

Almost surely, 2^167649442620 is an apocalyptic number.

167649442620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 167649442620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256182611328).

167649442620 is an abundant number, since it is smaller than the sum of its proper divisors (344715780036).

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

167649442620 is a wasteful number, since it uses less digits than its factorization.

167649442620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135131 (or 135129 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 51.

The spelling of 167649442620 in words is "one hundred sixty-seven billion, six hundred forty-nine million, four hundred forty-two thousand, six hundred twenty".