16490493428178 has 128 divisors (see below), whose sum is σ = 41223182247936. Its totient is φ = 4272420556800.

The previous prime is 16490493428137. The next prime is 16490493428183. The reversal of 16490493428178 is 87182439409461.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 344123076 + ... + 344170992.

It is an arithmetic number, because the mean of its divisors is an integer number (322056111312).

Almost surely, 2^{16490493428178} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16490493428178, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20611591123968).

16490493428178 is an abundant number, since it is smaller than the sum of its proper divisors (24732688819758).

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

16490493428178 is a wasteful number, since it uses less digits than its factorization.

16490493428178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49808.

The product of its (nonzero) digits is 83607552, while the sum is 66.

The spelling of 16490493428178 in words is "sixteen trillion, four hundred ninety billion, four hundred ninety-three million, four hundred twenty-eight thousand, one hundred seventy-eight".