161117699 has 2 divisors, whose sum is σ = 161117700. Its totient is φ = 161117698.

The previous prime is 161117683. The next prime is 161117717. The reversal of 161117699 is 996711161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161117699 - 2⁴ = 161117683 is a prime.

It is not a weakly prime, because it can be changed into another prime (161117629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80558849 + 80558850.

It is an arithmetic number, because the mean of its divisors is an integer number (80558850).

Almost surely, 2^161117699 is an apocalyptic number.

161117699 is a deficient number, since it is larger than the sum of its proper divisors (1).

161117699 is an equidigital number, since it uses as much as digits as its factorization.

161117699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412, while the sum is 41.

The square root of 161117699 is about 12693.2146834441. The cubic root of 161117699 is about 544.1447168960.

The spelling of 161117699 in words is "one hundred sixty-one million, one hundred seventeen thousand, six hundred ninety-nine".