161663676259928 has 16 divisors (see below), whose sum is σ = 303125858307000. Its totient is φ = 80830114044736.

The previous prime is 161663676259927. The next prime is 161663676259951. The reversal of 161663676259928 is 829952676366161.

161663676259928 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161663676259928² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161663676259927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215112098 + ... + 215862321.

Almost surely, 2^{161663676259928} is an apocalyptic number.

It is an amenable number.

161663676259928 is a deficient number, since it is larger than the sum of its proper divisors (141462182047072).

161663676259928 is a wasteful number, since it uses less digits than its factorization.

161663676259928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431021314 (or 431021310 counting only the distinct ones).

The product of its digits is 2116316160, while the sum is 77.

The spelling of 161663676259928 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-eight".