161452245116531 has 2 divisors, whose sum is σ = 161452245116532. Its totient is φ = 161452245116530.

The previous prime is 161452245116479. The next prime is 161452245116627. The reversal of 161452245116531 is 135611542254161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161452245116531 - 2²² = 161452240922227 is a prime.

It is a super-2 number, since 2×161452245116531² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (161452245116731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80726122558265 + 80726122558266.

It is an arithmetic number, because the mean of its divisors is an integer number (80726122558266).

Almost surely, 2^{161452245116531} is an apocalyptic number.

161452245116531 is a deficient number, since it is larger than the sum of its proper divisors (1).

161452245116531 is an equidigital number, since it uses as much as digits as its factorization.

161452245116531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864000, while the sum is 47.

The spelling of 161452245116531 in words is "one hundred sixty-one trillion, four hundred fifty-two billion, two hundred forty-five million, one hundred sixteen thousand, five hundred thirty-one".