161045068844631 has 32 divisors (see below), whose sum is σ = 216717369336000. Its totient is φ = 106371787760640.

The previous prime is 161045068844599. The next prime is 161045068844633. The reversal of 161045068844631 is 136448860540161.

161045068844631 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161045068844631 - 2⁵ = 161045068844599 is a prime.

It is a super-2 number, since 2×161045068844631² (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 (161045068844633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2200603861 + ... + 2200677041.

It is an arithmetic number, because the mean of its divisors is an integer number (6772417791750).

Almost surely, 2^{161045068844631} is an apocalyptic number.

161045068844631 is a deficient number, since it is larger than the sum of its proper divisors (55672300491369).

161045068844631 is a wasteful number, since it uses less digits than its factorization.

161045068844631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85779.

The product of its (nonzero) digits is 13271040, while the sum is 57.

The spelling of 161045068844631 in words is "one hundred sixty-one trillion, forty-five billion, sixty-eight million, eight hundred forty-four thousand, six hundred thirty-one".