161601551675063 has 2 divisors, whose sum is σ = 161601551675064. Its totient is φ = 161601551675062.

The previous prime is 161601551675029. The next prime is 161601551675077. The reversal of 161601551675063 is 360576155106161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161601551675063 - 2⁶ = 161601551674999 is a prime.

It is a super-2 number, since 2×161601551675063² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161601551674996 and 161601551675014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161601551675363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80800775837531 + 80800775837532.

It is an arithmetic number, because the mean of its divisors is an integer number (80800775837532).

Almost surely, 2^{161601551675063} is an apocalyptic number.

161601551675063 is a deficient number, since it is larger than the sum of its proper divisors (1).

161601551675063 is an equidigital number, since it uses as much as digits as its factorization.

161601551675063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402000, while the sum is 53.

The spelling of 161601551675063 in words is "one hundred sixty-one trillion, six hundred one billion, five hundred fifty-one million, six hundred seventy-five thousand, sixty-three".