178468886886920 has 256 divisors, whose sum is σ = 474704136990720. Its totient is φ = 59093021491200.

The previous prime is 178468886886919. The next prime is 178468886886971. The reversal of 178468886886920 is 29688688864871.

It is a super-2 number, since 2×178468886886920² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28252155602 + ... + 28252161918.

It is an arithmetic number, because the mean of its divisors is an integer number (1854313035120).

Almost surely, 2^{178468886886920} is an apocalyptic number.

178468886886920 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 178468886886920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237352068495360).

178468886886920 is an abundant number, since it is smaller than the sum of its proper divisors (296235250103800).

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

178468886886920 is a wasteful number, since it uses less digits than its factorization.

178468886886920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12584 (or 12580 counting only the distinct ones).

The product of its (nonzero) digits is 28538044416, while the sum is 89.

The spelling of 178468886886920 in words is "one hundred seventy-eight trillion, four hundred sixty-eight billion, eight hundred eighty-six million, eight hundred eighty-six thousand, nine hundred twenty".