161663676259927 has 2 divisors, whose sum is σ = 161663676259928. Its totient is φ = 161663676259926.

The previous prime is 161663676259873. The next prime is 161663676259951. The reversal of 161663676259927 is 729952676366161.

161663676259927 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161663676259927 is a prime.

It is a super-2 number, since 2×161663676259927² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161663676259997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80831838129963 + 80831838129964.

It is an arithmetic number, because the mean of its divisors is an integer number (80831838129964).

Almost surely, 2^{161663676259927} is an apocalyptic number.

161663676259927 is a deficient number, since it is larger than the sum of its proper divisors (1).

161663676259927 is an equidigital number, since it uses as much as digits as its factorization.

161663676259927 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1851776640, while the sum is 76.

The spelling of 161663676259927 in words is "one hundred sixty-one trillion, six hundred sixty-three billion, six hundred seventy-six million, two hundred fifty-nine thousand, nine hundred twenty-seven".