16980716117 has 2 divisors, whose sum is σ = 16980716118. Its totient is φ = 16980716116.

The previous prime is 16980716017. The next prime is 16980716131. The reversal of 16980716117 is 71161708961.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16351759876 + 628956241 = 127874^2 + 25079^2 .

It is a cyclic number.

It is not a de Polignac number, because 16980716117 - 2²⁶ = 16913607253 is a prime.

It is a super-2 number, since 2×16980716117² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16980716167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8490358058 + 8490358059.

It is an arithmetic number, because the mean of its divisors is an integer number (8490358059).

Almost surely, 2^16980716117 is an apocalyptic number.

It is an amenable number.

16980716117 is a deficient number, since it is larger than the sum of its proper divisors (1).

16980716117 is an equidigital number, since it uses as much as digits as its factorization.

16980716117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 47.

The spelling of 16980716117 in words is "sixteen billion, nine hundred eighty million, seven hundred sixteen thousand, one hundred seventeen".