45131444009 has 4 divisors (see below), whose sum is σ = 46351212804. Its totient is φ = 43911675216.

The previous prime is 45131443999. The next prime is 45131444069. The reversal of 45131444009 is 90044413154.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41178555625 + 3952888384 = 202925^2 + 62872^2 .

It is a cyclic number.

It is not a de Polignac number, because 45131444009 - 2⁴ = 45131443993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45131444009.

It is not an unprimeable number, because it can be changed into a prime (45131444069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 609884342 + ... + 609884415.

It is an arithmetic number, because the mean of its divisors is an integer number (11587803201).

Almost surely, 2^45131444009 is an apocalyptic number.

It is an amenable number.

45131444009 is a deficient number, since it is larger than the sum of its proper divisors (1219768795).

45131444009 is a wasteful number, since it uses less digits than its factorization.

45131444009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219768794.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 45131444009 in words is "forty-five billion, one hundred thirty-one million, four hundred forty-four thousand, nine".