44571737493 has 6 divisors (see below), whose sum is σ = 64381398614. Its totient is φ = 29714491656.

The previous prime is 44571737489. The next prime is 44571737519. The reversal of 44571737493 is 39473717544.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 22310500689 + 22261236804 = 149367^2 + 149202^2 .

It is not a de Polignac number, because 44571737493 - 2² = 44571737489 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44571737893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2476207630 + ... + 2476207647.

Almost surely, 2^44571737493 is an apocalyptic number.

It is an amenable number.

44571737493 is a deficient number, since it is larger than the sum of its proper divisors (19809661121).

44571737493 is a wasteful number, since it uses less digits than its factorization.

44571737493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4952415283 (or 4952415280 counting only the distinct ones).

The product of its digits is 8890560, while the sum is 54.

The spelling of 44571737493 in words is "forty-four billion, five hundred seventy-one million, seven hundred thirty-seven thousand, four hundred ninety-three".