16220057172 has 96 divisors (see below), whose sum is σ = 42034083840. Its totient is φ = 4826868480.

The previous prime is 16220057143. The next prime is 16220057173. The reversal of 16220057172 is 27175002261.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16220057173) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2299483 + ... + 2306525.

It is an arithmetic number, because the mean of its divisors is an integer number (437855040).

Almost surely, 2^16220057172 is an apocalyptic number.

16220057172 is a gapful number since it is divisible by the number (12) 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 16220057172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21017041920).

16220057172 is an abundant number, since it is smaller than the sum of its proper divisors (25814026668).

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

16220057172 is a wasteful number, since it uses less digits than its factorization.

16220057172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7373 (or 7371 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 33.

The spelling of 16220057172 in words is "sixteen billion, two hundred twenty million, fifty-seven thousand, one hundred seventy-two".