161713631575 has 6 divisors (see below), whose sum is σ = 200524903184. Its totient is φ = 129370905240.

The previous prime is 161713631551. The next prime is 161713631609. The reversal of 161713631575 is 575136317161.

161713631575 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-161713631575 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3234272607 + ... + 3234272656.

Almost surely, 2^161713631575 is an apocalyptic number.

161713631575 is a deficient number, since it is larger than the sum of its proper divisors (38811271609).

161713631575 is an equidigital number, since it uses as much as digits as its factorization.

161713631575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6468545273 (or 6468545268 counting only the distinct ones).

The product of its digits is 396900, while the sum is 46.

The spelling of 161713631575 in words is "one hundred sixty-one billion, seven hundred thirteen million, six hundred thirty-one thousand, five hundred seventy-five".