44902253138 has 6 divisors (see below), whose sum is σ = 67353829221. Its totient is φ = 22450976732.

The previous prime is 44902253057. The next prime is 44902253167. The reversal of 44902253138 is 83135220944.

It can be written as a sum of positive squares in 2 ways, for example, as 29084914849 + 15817338289 = 170543^2 + 125767^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=149837.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 44902253095 and 44902253104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 224756 + ... + 374592.

Almost surely, 2^44902253138 is an apocalyptic number.

44902253138 is a deficient number, since it is larger than the sum of its proper divisors (22451576083).

44902253138 is an frugal number, since it uses more digits than its factorization.

44902253138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299676 (or 149839 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 44902253138 in words is "forty-four billion, nine hundred two million, two hundred fifty-three thousand, one hundred thirty-eight".