16973494687 has 2 divisors, whose sum is σ = 16973494688. Its totient is φ = 16973494686.

The previous prime is 16973494673. The next prime is 16973494693. The reversal of 16973494687 is 78649437961.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16973494687 - 2²⁷ = 16839276959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16973494487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8486747343 + 8486747344.

It is an arithmetic number, because the mean of its divisors is an integer number (8486747344).

Almost surely, 2^16973494687 is an apocalyptic number.

16973494687 is a deficient number, since it is larger than the sum of its proper divisors (1).

16973494687 is an equidigital number, since it uses as much as digits as its factorization.

16973494687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54867456, while the sum is 64.

The spelling of 16973494687 in words is "sixteen billion, nine hundred seventy-three million, four hundred ninety-four thousand, six hundred eighty-seven".