16731255173 has 2 divisors, whose sum is σ = 16731255174. Its totient is φ = 16731255172.

The previous prime is 16731255103. The next prime is 16731255193. The reversal of 16731255173 is 37155213761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16729611649 + 1643524 = 129343^2 + 1282^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16731255173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16731255173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16731255103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8365627586 + 8365627587.

It is an arithmetic number, because the mean of its divisors is an integer number (8365627587).

Almost surely, 2^16731255173 is an apocalyptic number.

It is an amenable number.

16731255173 is a deficient number, since it is larger than the sum of its proper divisors (1).

16731255173 is an equidigital number, since it uses as much as digits as its factorization.

16731255173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 132300, while the sum is 41.

The spelling of 16731255173 in words is "sixteen billion, seven hundred thirty-one million, two hundred fifty-five thousand, one hundred seventy-three".