399245766180 has 96 divisors (see below), whose sum is σ = 1144119656064. Its totient is φ = 103968313344.

The previous prime is 399245766163. The next prime is 399245766191. The reversal of 399245766180 is 81667542993.

It is a Harshad number since it is a multiple of its sum of digits (60).

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, 15562644 + ... + 15588276.

It is an arithmetic number, because the mean of its divisors is an integer number (11917913084).

It is a 2-persistent number, because it is pandigital, and so is 2⋅399245766180 = 798491532360, but 3⋅399245766180 = 1197737298540 is not.

Almost surely, 2^399245766180 is an apocalyptic number.

399245766180 is a gapful number since it is divisible by the number (30) 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 399245766180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (572059828032).

399245766180 is an abundant number, since it is smaller than the sum of its proper divisors (744873889884).

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

399245766180 is a wasteful number, since it uses less digits than its factorization.

399245766180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31725 (or 31723 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 60.

The spelling of 399245766180 in words is "three hundred ninety-nine billion, two hundred forty-five million, seven hundred sixty-six thousand, one hundred eighty".