16223166357880 has 64 divisors (see below), whose sum is σ = 37136137651200. Its totient is φ = 6376643925120.

The previous prime is 16223166357823. The next prime is 16223166357883. The reversal of 16223166357880 is 8875366132261.

It is a happy number.

It is a super-2 number, since 2×16223166357880² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16223166357883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4299745 + ... + 7136815.

It is an arithmetic number, because the mean of its divisors is an integer number (580252150800).

Almost surely, 2^{16223166357880} is an apocalyptic number.

16223166357880 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 16223166357880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18568068825600).

16223166357880 is an abundant number, since it is smaller than the sum of its proper divisors (20912971293320).

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

16223166357880 is a wasteful number, since it uses less digits than its factorization.

16223166357880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2839564 (or 2839560 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 58.

The spelling of 16223166357880 in words is "sixteen trillion, two hundred twenty-three billion, one hundred sixty-six million, three hundred fifty-seven thousand, eight hundred eighty".