161616150051529 has 2 divisors, whose sum is σ = 161616150051530. Its totient is φ = 161616150051528.

The previous prime is 161616150051523. The next prime is 161616150051569. The reversal of 161616150051529 is 925150051616161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142821740148025 + 18794409903504 = 11950805^2 + 4335252^2 .

It is a cyclic number.

It is not a de Polignac number, because 161616150051529 - 2⁷ = 161616150051401 is a prime.

It is a super-2 number, since 2×161616150051529² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (161616150051523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80808075025764 + 80808075025765.

It is an arithmetic number, because the mean of its divisors is an integer number (80808075025765).

Almost surely, 2^{161616150051529} is an apocalyptic number.

It is an amenable number.

161616150051529 is a deficient number, since it is larger than the sum of its proper divisors (1).

161616150051529 is an equidigital number, since it uses as much as digits as its factorization.

161616150051529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486000, while the sum is 49.

The spelling of 161616150051529 in words is "one hundred sixty-one trillion, six hundred sixteen billion, one hundred fifty million, fifty-one thousand, five hundred twenty-nine".