161542424645299 has 16 divisors (see below), whose sum is σ = 161808353280000. Its totient is φ = 161276721802560.

The previous prime is 161542424645281. The next prime is 161542424645317. The reversal of 161542424645299 is 992546424245161.

It is a happy number.

161542424645299 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (161542424645281) and next prime (161542424645317).

It is a cyclic number.

It is not a de Polignac number, because 161542424645299 - 2⁹ = 161542424644787 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161542424645299.

It is not an unprimeable number, because it can be changed into a prime (161542424675299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21541858452 + ... + 21541865950.

It is an arithmetic number, because the mean of its divisors is an integer number (10113022080000).

Almost surely, 2^{161542424645299} is an apocalyptic number.

161542424645299 is a deficient number, since it is larger than the sum of its proper divisors (265928634701).

161542424645299 is an equidigital number, since it uses as much as digits as its factorization.

161542424645299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18210.

The product of its digits is 149299200, while the sum is 64.

The spelling of 161542424645299 in words is "one hundred sixty-one trillion, five hundred forty-two billion, four hundred twenty-four million, six hundred forty-five thousand, two hundred ninety-nine".