161632246225577 has 2 divisors, whose sum is σ = 161632246225578. Its totient is φ = 161632246225576.

The previous prime is 161632246225453. The next prime is 161632246225591. The reversal of 161632246225577 is 775522642236161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97580731863616 + 64051514361961 = 9878296^2 + 8003219^2 .

It is a cyclic number.

It is not a de Polignac number, because 161632246225577 - 2¹⁶ = 161632246160041 is a prime.

It is a super-2 number, since 2×161632246225577² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (161632246221577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80816123112788 + 80816123112789.

It is an arithmetic number, because the mean of its divisors is an integer number (80816123112789).

Almost surely, 2^{161632246225577} is an apocalyptic number.

It is an amenable number.

161632246225577 is a deficient number, since it is larger than the sum of its proper divisors (1).

161632246225577 is an equidigital number, since it uses as much as digits as its factorization.

161632246225577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50803200, while the sum is 59.

The spelling of 161632246225577 in words is "one hundred sixty-one trillion, six hundred thirty-two billion, two hundred forty-six million, two hundred twenty-five thousand, five hundred seventy-seven".