178313390164 has 96 divisors (see below), whose sum is σ = 403930146816. Its totient is φ = 66977763840.

The previous prime is 178313390113. The next prime is 178313390183. The reversal of 178313390164 is 461093313871.

It is a super-2 number, since 2×178313390164² (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, 448974 + ... + 747130.

It is an arithmetic number, because the mean of its divisors is an integer number (4207605696).

Almost surely, 2^178313390164 is an apocalyptic number.

178313390164 is a gapful number since it is divisible by the number (14) 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 178313390164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201965073408).

178313390164 is an abundant number, since it is smaller than the sum of its proper divisors (225616756652).

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

178313390164 is a wasteful number, since it uses less digits than its factorization.

178313390164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298265 (or 298263 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 178313390164 in words is "one hundred seventy-eight billion, three hundred thirteen million, three hundred ninety thousand, one hundred sixty-four".