161379737329 has 2 divisors, whose sum is σ = 161379737330. Its totient is φ = 161379737328.

The previous prime is 161379737303. The next prime is 161379737333. The reversal of 161379737329 is 923737973161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94112127729 + 67267609600 = 306777^2 + 259360^2 .

It is a cyclic number.

It is not a de Polignac number, because 161379737329 - 2¹⁵ = 161379704561 is a prime.

It is not a weakly prime, because it can be changed into another prime (161379737339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80689868664 + 80689868665.

It is an arithmetic number, because the mean of its divisors is an integer number (80689868665).

Almost surely, 2^161379737329 is an apocalyptic number.

It is an amenable number.

161379737329 is a deficient number, since it is larger than the sum of its proper divisors (1).

161379737329 is an equidigital number, since it uses as much as digits as its factorization.

161379737329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9001692, while the sum is 58.

The spelling of 161379737329 in words is "one hundred sixty-one billion, three hundred seventy-nine million, seven hundred thirty-seven thousand, three hundred twenty-nine".