161130977699 has 2 divisors, whose sum is σ = 161130977700. Its totient is φ = 161130977698.

The previous prime is 161130977639. The next prime is 161130977701. The reversal of 161130977699 is 996779031161.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161130977699 is a prime.

Together with 161130977701, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (161130977639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80565488849 + 80565488850.

It is an arithmetic number, because the mean of its divisors is an integer number (80565488850).

Almost surely, 2^161130977699 is an apocalyptic number.

161130977699 is a deficient number, since it is larger than the sum of its proper divisors (1).

161130977699 is an equidigital number, since it uses as much as digits as its factorization.

161130977699 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3857868, while the sum is 59.

The spelling of 161130977699 in words is "one hundred sixty-one billion, one hundred thirty million, nine hundred seventy-seven thousand, six hundred ninety-nine".