161631058211 has 8 divisors (see below), whose sum is σ = 186355911264. Its totient is φ = 137314880640.

The previous prime is 161631058187. The next prime is 161631058261. The reversal of 161631058211 is 112850136161.

161631058211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161631058211 - 2²² = 161626863907 is a prime.

It is a super-2 number, since 2×161631058211² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161631058261) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 102168020 + ... + 102169601.

It is an arithmetic number, because the mean of its divisors is an integer number (23294488908).

Almost surely, 2^161631058211 is an apocalyptic number.

161631058211 is a deficient number, since it is larger than the sum of its proper divisors (24724853053).

161631058211 is a wasteful number, since it uses less digits than its factorization.

161631058211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204337741.

The product of its (nonzero) digits is 8640, while the sum is 35.

The spelling of 161631058211 in words is "one hundred sixty-one billion, six hundred thirty-one million, fifty-eight thousand, two hundred eleven".