16709977202687 has 2 divisors, whose sum is σ = 16709977202688. Its totient is φ = 16709977202686.

The previous prime is 16709977202651. The next prime is 16709977202693. The reversal of 16709977202687 is 78620277990761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16709977202687 - 2⁸ = 16709977202431 is a prime.

It is a super-2 number, since 2×16709977202687² (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 16709977202687.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16709977202287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8354988601343 + 8354988601344.

It is an arithmetic number, because the mean of its divisors is an integer number (8354988601344).

Almost surely, 2^{16709977202687} is an apocalyptic number.

16709977202687 is a deficient number, since it is larger than the sum of its proper divisors (1).

16709977202687 is an equidigital number, since it uses as much as digits as its factorization.

16709977202687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224042112, while the sum is 71.

The spelling of 16709977202687 in words is "sixteen trillion, seven hundred nine billion, nine hundred seventy-seven million, two hundred two thousand, six hundred eighty-seven".