161336612357 has 2 divisors, whose sum is σ = 161336612358. Its totient is φ = 161336612356.

The previous prime is 161336612329. The next prime is 161336612387. The reversal of 161336612357 is 753216633161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128715195361 + 32621416996 = 358769^2 + 180614^2 .

It is a cyclic number.

It is not a de Polignac number, because 161336612357 - 2²⁸ = 161068176901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161336612387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80668306178 + 80668306179.

It is an arithmetic number, because the mean of its divisors is an integer number (80668306179).

Almost surely, 2^161336612357 is an apocalyptic number.

It is an amenable number.

161336612357 is a deficient number, since it is larger than the sum of its proper divisors (1).

161336612357 is an equidigital number, since it uses as much as digits as its factorization.

161336612357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 44.

The spelling of 161336612357 in words is "one hundred sixty-one billion, three hundred thirty-six million, six hundred twelve thousand, three hundred fifty-seven".