16880666192928 has 72 divisors (see below), whose sum is σ = 48006476563500. Its totient is φ = 5626644678144.

The previous prime is 16880666192927. The next prime is 16880666192969. The reversal of 16880666192928 is 82929166608861.

It can be written as a sum of positive squares in 2 ways, for example, as 15467639483664 + 1413026709264 = 3932892^2 + 1188708^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×16880666192928² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (16880666192927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5441998 + ... + 7960946.

Almost surely, 2^{16880666192928} is an apocalyptic number.

16880666192928 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16880666192928 is an abundant number, since it is smaller than the sum of its proper divisors (31125810370572).

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

16880666192928 is a wasteful number, since it uses less digits than its factorization.

16880666192928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2542234 (or 2542223 counting only the distinct ones).

The product of its (nonzero) digits is 214990848, while the sum is 72.

The spelling of 16880666192928 in words is "sixteen trillion, eight hundred eighty billion, six hundred sixty-six million, one hundred ninety-two thousand, nine hundred twenty-eight".