16990621584696 has 24 divisors (see below), whose sum is σ = 46016266792080. Its totient is φ = 5663540528208.

The previous prime is 16990621584659. The next prime is 16990621584793. The reversal of 16990621584696 is 69648512609961.

16990621584696 is a `hidden beast` number, since 1 + 6 + 9 + 9 + 0 + 6 + 2 + 158 + 469 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×16990621584696² (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), and also a Moran number because the ratio is a prime number: 235980855343 = 16990621584696 / (1 + 6 + 9 + 9 + 0 + 6 + 2 + 1 + 5 + 8 + 4 + 6 + 9 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117990427600 + ... + 117990427743.

It is an arithmetic number, because the mean of its divisors is an integer number (1917344449670).

Almost surely, 2^{16990621584696} is an apocalyptic number.

It is an amenable number.

16990621584696 is an abundant number, since it is smaller than the sum of its proper divisors (29025645207384).

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

16990621584696 is a wasteful number, since it uses less digits than its factorization.

16990621584696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235980855355 (or 235980855348 counting only the distinct ones).

The product of its (nonzero) digits is 302330880, while the sum is 72.

The spelling of 16990621584696 in words is "sixteen trillion, nine hundred ninety billion, six hundred twenty-one million, five hundred eighty-four thousand, six hundred ninety-six".