16117612571 has 2 divisors, whose sum is σ = 16117612572. Its totient is φ = 16117612570.

The previous prime is 16117612519. The next prime is 16117612583. The reversal of 16117612571 is 17521671161.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16117612571 is a prime.

It is not a weakly prime, because it can be changed into another prime (16117612171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8058806285 + 8058806286.

It is an arithmetic number, because the mean of its divisors is an integer number (8058806286).

Almost surely, 2^16117612571 is an apocalyptic number.

16117612571 is a deficient number, since it is larger than the sum of its proper divisors (1).

16117612571 is an equidigital number, since it uses as much as digits as its factorization.

16117612571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17640, while the sum is 38.

The spelling of 16117612571 in words is "sixteen billion, one hundred seventeen million, six hundred twelve thousand, five hundred seventy-one".