161373599 has 2 divisors, whose sum is σ = 161373600. Its totient is φ = 161373598.

The previous prime is 161373577. The next prime is 161373617. The reversal of 161373599 is 995373161.

It is a strong prime.

It is an emirp because it is prime and its reverse (995373161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161373599 - 2⁸ = 161373343 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161373899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80686799 + 80686800.

It is an arithmetic number, because the mean of its divisors is an integer number (80686800).

Almost surely, 2^161373599 is an apocalyptic number.

161373599 is a deficient number, since it is larger than the sum of its proper divisors (1).

161373599 is an equidigital number, since it uses as much as digits as its factorization.

161373599 is an evil number, because the sum of its binary digits is even.

The product of its digits is 153090, while the sum is 44.

The square root of 161373599 is about 12703.2908728408. The cubic root of 161373599 is about 544.4326492130.

The spelling of 161373599 in words is "one hundred sixty-one million, three hundred seventy-three thousand, five hundred ninety-nine".