16172218880 has 160 divisors (see below), whose sum is σ = 41412349440. Its totient is φ = 6043484160.

The previous prime is 16172218877. The next prime is 16172218957. The reversal of 16172218880 is 8881227161.

It is a tau number, because it is divible by the number of its divisors (160).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2297927 + ... + 2304953.

It is an arithmetic number, because the mean of its divisors is an integer number (258827184).

Almost surely, 2^16172218880 is an apocalyptic number.

16172218880 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 16172218880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20706174720).

16172218880 is an abundant number, since it is smaller than the sum of its proper divisors (25240130560).

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

16172218880 is an equidigital number, since it uses as much as digits as its factorization.

16172218880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7110 (or 7094 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 44.

The spelling of 16172218880 in words is "sixteen billion, one hundred seventy-two million, two hundred eighteen thousand, eight hundred eighty".