161690496002617 has 2 divisors, whose sum is σ = 161690496002618. Its totient is φ = 161690496002616.

The previous prime is 161690496002603. The next prime is 161690496002641. The reversal of 161690496002617 is 716200694096161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158044397408041 + 3646098594576 = 12571571^2 + 1909476^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161690496002617 is a prime.

It is a super-2 number, since 2×161690496002617² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (161690496002687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80845248001308 + 80845248001309.

It is an arithmetic number, because the mean of its divisors is an integer number (80845248001309).

Almost surely, 2^{161690496002617} is an apocalyptic number.

It is an amenable number.

161690496002617 is a deficient number, since it is larger than the sum of its proper divisors (1).

161690496002617 is an equidigital number, since it uses as much as digits as its factorization.

161690496002617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5878656, while the sum is 58.

The spelling of 161690496002617 in words is "one hundred sixty-one trillion, six hundred ninety billion, four hundred ninety-six million, two thousand, six hundred seventeen".