161379717311 has 2 divisors, whose sum is σ = 161379717312. Its totient is φ = 161379717310.

The previous prime is 161379717277. The next prime is 161379717337. The reversal of 161379717311 is 113717973161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161379717311 - 2²² = 161375523007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161379717341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80689858655 + 80689858656.

It is an arithmetic number, because the mean of its divisors is an integer number (80689858656).

Almost surely, 2^161379717311 is an apocalyptic number.

161379717311 is a deficient number, since it is larger than the sum of its proper divisors (1).

161379717311 is an equidigital number, since it uses as much as digits as its factorization.

161379717311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 166698, while the sum is 47.

The spelling of 161379717311 in words is "one hundred sixty-one billion, three hundred seventy-nine million, seven hundred seventeen thousand, three hundred eleven".