161452223265717 has 24 divisors (see below), whose sum is σ = 236077189810488. Its totient is φ = 106315990704000.

The previous prime is 161452223265673. The next prime is 161452223265731. The reversal of 161452223265717 is 717562322254161.

161452223265717 is a `hidden beast` number, since 1 + 6 + 1 + 4 + 5 + 22 + 23 + 26 + 571 + 7 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 50597415070596 + 110854808195121 = 7113186^2 + 10528761^2 .

It is not a de Polignac number, because 161452223265717 - 2¹² = 161452223261621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161452223265787) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 210561738 + ... + 211327115.

It is an arithmetic number, because the mean of its divisors is an integer number (9836549575437).

Almost surely, 2^{161452223265717} is an apocalyptic number.

It is an amenable number.

161452223265717 is a deficient number, since it is larger than the sum of its proper divisors (74624966544771).

161452223265717 is a wasteful number, since it uses less digits than its factorization.

161452223265717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421889381 (or 421889378 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 54.

The spelling of 161452223265717 in words is "one hundred sixty-one trillion, four hundred fifty-two billion, two hundred twenty-three million, two hundred sixty-five thousand, seven hundred seventeen".