16579437868791 has 24 divisors (see below), whose sum is σ = 27491962767360. Its totient is φ = 9431480342736.

The previous prime is 16579437868789. The next prime is 16579437868897. The reversal of 16579437868791 is 19786873497561.

16579437868791 is a `hidden beast` number, since 1 + 6 + 57 + 9 + 437 + 8 + 68 + 79 + 1 = 666.

It is not a de Polignac number, because 16579437868791 - 2¹ = 16579437868789 is a prime.

It is a super-2 number, since 2×16579437868791² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16579437868791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16579437869791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 590043531 + ... + 590071628.

It is an arithmetic number, because the mean of its divisors is an integer number (1145498448640).

Almost surely, 2^{16579437868791} is an apocalyptic number.

16579437868791 is a deficient number, since it is larger than the sum of its proper divisors (10912524898569).

16579437868791 is a wasteful number, since it uses less digits than its factorization.

16579437868791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180115395 (or 1180115392 counting only the distinct ones).

The product of its digits is 3840721920, while the sum is 81.

The spelling of 16579437868791 in words is "sixteen trillion, five hundred seventy-nine billion, four hundred thirty-seven million, eight hundred sixty-eight thousand, seven hundred ninety-one".