161376680629 has 2 divisors, whose sum is σ = 161376680630. Its totient is φ = 161376680628.

The previous prime is 161376680513. The next prime is 161376680669. The reversal of 161376680629 is 926086673161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106256440900 + 55120239729 = 325970^2 + 234777^2 .

It is a cyclic number.

It is not a de Polignac number, because 161376680629 - 2⁹ = 161376680117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161376680629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161376680669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80688340314 + 80688340315.

It is an arithmetic number, because the mean of its divisors is an integer number (80688340315).

Almost surely, 2^161376680629 is an apocalyptic number.

It is an amenable number.

161376680629 is a deficient number, since it is larger than the sum of its proper divisors (1).

161376680629 is an equidigital number, since it uses as much as digits as its factorization.

161376680629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 161376680629 in words is "one hundred sixty-one billion, three hundred seventy-six million, six hundred eighty thousand, six hundred twenty-nine".