401881023180 has 576 divisors, whose sum is σ = 1557525473280. Its totient is φ = 84231373824.

The previous prime is 401881023169. The next prime is 401881023259. The reversal of 401881023180 is 81320188104.

401881023180 is a `hidden beast` number, since 401 + 8 + 8 + 10 + 231 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 100292737 + ... + 100296743.

It is an arithmetic number, because the mean of its divisors is an integer number (2704037280).

Almost surely, 2^401881023180 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401881023180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (778762736640).

401881023180 is an abundant number, since it is smaller than the sum of its proper divisors (1155644450100).

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

401881023180 is a wasteful number, since it uses less digits than its factorization.

401881023180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4215 (or 4194 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The spelling of 401881023180 in words is "four hundred one billion, eight hundred eighty-one million, twenty-three thousand, one hundred eighty".