161444752224 has 48 divisors (see below), whose sum is σ = 484334258688. Its totient is φ = 46127071872.

The previous prime is 161444752213. The next prime is 161444752283. The reversal of 161444752224 is 422257444161.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120121912 + ... + 120123255.

It is an arithmetic number, because the mean of its divisors is an integer number (10090297056).

Almost surely, 2^161444752224 is an apocalyptic number.

161444752224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

161444752224 is an abundant number, since it is smaller than the sum of its proper divisors (322889506464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161444752224 is a wasteful number, since it uses less digits than its factorization.

161444752224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240245187 (or 240245179 counting only the distinct ones).

The product of its digits is 430080, while the sum is 42.

The spelling of 161444752224 in words is "one hundred sixty-one billion, four hundred forty-four million, seven hundred fifty-two thousand, two hundred twenty-four".