167664389056 has 56 divisors (see below), whose sum is σ = 341019024336. Its totient is φ = 81763123200.

The previous prime is 167664389041. The next prime is 167664389059. The reversal of 167664389056 is 650983466761.

It is a super-2 number, since 2×167664389056² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 167664388985 and 167664389003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167664389059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239520 + ... + 626656.

Almost surely, 2^167664389056 is an apocalyptic number.

167664389056 is a gapful number since it is divisible by the number (16) 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 167664389056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170509512168).

167664389056 is an abundant number, since it is smaller than the sum of its proper divisors (173354635280).

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

167664389056 is a wasteful number, since it uses less digits than its factorization.

167664389056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387317 (or 387307 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 61.

The spelling of 167664389056 in words is "one hundred sixty-seven billion, six hundred sixty-four million, three hundred eighty-nine thousand, fifty-six".