16328912797890 has 128 divisors (see below), whose sum is σ = 54288333527040. Its totient is φ = 3393020836800.

The previous prime is 16328912797811. The next prime is 16328912797909. The reversal of 16328912797890 is 9879721982361.

16328912797890 is a `hidden beast` number, since 1 + 6 + 3 + 289 + 1 + 279 + 78 + 9 + 0 = 666.

It is a super-2 number, since 2×16328912797890² (a number of 27 digits) contains 22 as substring.

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, 392689956 + ... + 392731535.

It is an arithmetic number, because the mean of its divisors is an integer number (424127605680).

Almost surely, 2^{16328912797890} is an apocalyptic number.

16328912797890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16328912797890 is an abundant number, since it is smaller than the sum of its proper divisors (37959420729150).

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

16328912797890 is a wasteful number, since it uses less digits than its factorization.

16328912797890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785421525 (or 785421519 counting only the distinct ones).

The product of its (nonzero) digits is 164602368, while the sum is 72.

The spelling of 16328912797890 in words is "sixteen trillion, three hundred twenty-eight billion, nine hundred twelve million, seven hundred ninety-seven thousand, eight hundred ninety".