161601600179 has 2 divisors, whose sum is σ = 161601600180. Its totient is φ = 161601600178.

The previous prime is 161601600151. The next prime is 161601600187. The reversal of 161601600179 is 971006106161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161601600179 - 2¹² = 161601596083 is a prime.

It is a super-2 number, since 2×161601600179² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (161601600079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80800800089 + 80800800090.

It is an arithmetic number, because the mean of its divisors is an integer number (80800800090).

Almost surely, 2^161601600179 is an apocalyptic number.

161601600179 is a deficient number, since it is larger than the sum of its proper divisors (1).

161601600179 is an equidigital number, since it uses as much as digits as its factorization.

161601600179 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 38.

The spelling of 161601600179 in words is "one hundred sixty-one billion, six hundred one million, six hundred thousand, one hundred seventy-nine".