44255116161 has 9 divisors (see below), whose sum is σ = 63924968289. Its totient is φ = 29502990036.

The previous prime is 44255116151. The next prime is 44255116187. The reversal of 44255116161 is 16161155244.

The square root of 44255116161 is 210369.

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

44255116161 is a `hidden beast` number, since 4 + 4 + 25 + 5 + 11 + 616 + 1 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 44255116161 - 2⁷ = 44255116033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (44255116111) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 596046 + ... + 666168.

Almost surely, 2^44255116161 is an apocalyptic number.

44255116161 is the 210369-th square number.

44255116161 is the 105185-th centered octagonal number.

It is an amenable number.

44255116161 is a deficient number, since it is larger than the sum of its proper divisors (19669852128).

44255116161 is an frugal number, since it uses more digits than its factorization.

44255116161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140252 (or 70126 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

Multiplying 44255116161 by its sum of digits (36), we get a square (1593184181796 = 1262214²).

The spelling of 44255116161 in words is "forty-four billion, two hundred fifty-five million, one hundred sixteen thousand, one hundred sixty-one".