161416623091 has 2 divisors, whose sum is σ = 161416623092. Its totient is φ = 161416623090.

The previous prime is 161416623059. The next prime is 161416623101. The reversal of 161416623091 is 190326614161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161416623091 - 2⁵ = 161416623059 is a prime.

It is not a weakly prime, because it can be changed into another prime (161416623791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80708311545 + 80708311546.

It is an arithmetic number, because the mean of its divisors is an integer number (80708311546).

Almost surely, 2^161416623091 is an apocalyptic number.

161416623091 is a deficient number, since it is larger than the sum of its proper divisors (1).

161416623091 is an equidigital number, since it uses as much as digits as its factorization.

161416623091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 40.

The spelling of 161416623091 in words is "one hundred sixty-one billion, four hundred sixteen million, six hundred twenty-three thousand, ninety-one".