16641642627779 has 8 divisors (see below), whose sum is σ = 17921836973040. Its totient is φ = 15361457995296.

The previous prime is 16641642627653. The next prime is 16641642627821. The reversal of 16641642627779 is 97772624614661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16641642627779 is a prime.

It is a super-2 number, since 2×16641642627779² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16641642629779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1347857 + ... + 5924525.

It is an arithmetic number, because the mean of its divisors is an integer number (2240229621630).

Almost surely, 2^{16641642627779} is an apocalyptic number.

16641642627779 is a deficient number, since it is larger than the sum of its proper divisors (1280194345261).

16641642627779 is a wasteful number, since it uses less digits than its factorization.

16641642627779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4856389.

The product of its digits is 256048128, while the sum is 68.

The spelling of 16641642627779 in words is "sixteen trillion, six hundred forty-one billion, six hundred forty-two million, six hundred twenty-seven thousand, seven hundred seventy-nine".