44999561161 has 3 divisors (see below), whose sum is σ = 44999773293. Its totient is φ = 44999349030.

The previous prime is 44999561149. The next prime is 44999561179. The reversal of 44999561161 is 16116599944.

The square root of 44999561161 is 212131.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 44999561161 - 2²¹ = 44997464009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44999561461) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 106066 + ... + 318196.

It is an arithmetic number, because the mean of its divisors is an integer number (14999924431).

Almost surely, 2^44999561161 is an apocalyptic number.

44999561161 is the 212131-st square number.

44999561161 is the 106066-th centered octagonal number.

It is an amenable number.

44999561161 is a deficient number, since it is larger than the sum of its proper divisors (212132).

44999561161 is an frugal number, since it uses more digits than its factorization.

44999561161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424262 (or 212131 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 55.

The spelling of 44999561161 in words is "forty-four billion, nine hundred ninety-nine million, five hundred sixty-one thousand, one hundred sixty-one".