167661663330 has 256 divisors, whose sum is σ = 494329651200. Its totient is φ = 35539845120.

The previous prime is 167661663329. The next prime is 167661663353. The reversal of 167661663330 is 33366166761.

It is a super-2 number, since 2×167661663330² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 167661663330.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 162619915 + ... + 162620945.

It is an arithmetic number, because the mean of its divisors is an integer number (1930975200).

Almost surely, 2^167661663330 is an apocalyptic number.

167661663330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 167661663330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247164825600).

167661663330 is an abundant number, since it is smaller than the sum of its proper divisors (326667987870).

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

167661663330 is a wasteful number, since it uses less digits than its factorization.

167661663330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889.

The product of its (nonzero) digits is 1469664, while the sum is 48.

The spelling of 167661663330 in words is "one hundred sixty-seven billion, six hundred sixty-one million, six hundred sixty-three thousand, three hundred thirty".