401994502760880 has 640 divisors, whose sum is σ = 1401552834877440. Its totient is φ = 105896737013760.

The previous prime is 401994502760861. The next prime is 401994502760923. The reversal of 401994502760880 is 88067205499104.

401994502760880 is a `hidden beast` number, since 4 + 0 + 19 + 9 + 4 + 5 + 0 + 2 + 7 + 608 + 8 + 0 = 666.

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, 104062773829 + ... + 104062777691.

It is an arithmetic number, because the mean of its divisors is an integer number (2189926304496).

Almost surely, 2^{401994502760880} is an apocalyptic number.

401994502760880 is a gapful number since it is divisible by the number (40) 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 401994502760880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (700776417438720).

401994502760880 is an abundant number, since it is smaller than the sum of its proper divisors (999558332116560).

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

401994502760880 is a wasteful number, since it uses less digits than its factorization.

401994502760880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5306 (or 5294 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 63.

The spelling of 401994502760880 in words is "four hundred one trillion, nine hundred ninety-four billion, five hundred two million, seven hundred sixty thousand, eight hundred eighty".