161116322144 has 12 divisors (see below), whose sum is σ = 317197759284. Its totient is φ = 80558161056.

The previous prime is 161116322069. The next prime is 161116322173. The reversal of 161116322144 is 441223611161.

It is a super-2 number, since 2×161116322144² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 5034885067 = 161116322144 / (1 + 6 + 1 + 1 + 1 + 6 + 3 + 2 + 2 + 1 + 4 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 161116322144.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2517442502 + ... + 2517442565.

It is an arithmetic number, because the mean of its divisors is an integer number (26433146607).

Almost surely, 2^161116322144 is an apocalyptic number.

It is an amenable number.

161116322144 is a deficient number, since it is larger than the sum of its proper divisors (156081437140).

161116322144 is an equidigital number, since it uses as much as digits as its factorization.

161116322144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5034885077 (or 5034885069 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The spelling of 161116322144 in words is "one hundred sixty-one billion, one hundred sixteen million, three hundred twenty-two thousand, one hundred forty-four".