44531659897 has 4 divisors (see below), whose sum is σ = 44532790900. Its totient is φ = 44530528896.

The previous prime is 44531659853. The next prime is 44531659903. The reversal of 44531659897 is 79895613544.

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 39370099561 + 5161560336 = 198419^2 + 71844^2 .

It is a cyclic number.

It is not a de Polignac number, because 44531659897 - 2⁷ = 44531659769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44531659847) 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 3 ways as a sum of consecutive naturals, for example, 504228 + ... + 585925.

It is an arithmetic number, because the mean of its divisors is an integer number (11133197725).

Almost surely, 2^44531659897 is an apocalyptic number.

It is an amenable number.

44531659897 is a deficient number, since it is larger than the sum of its proper divisors (1131003).

44531659897 is a wasteful number, since it uses less digits than its factorization.

44531659897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131002.

The product of its digits is 32659200, while the sum is 61.

The spelling of 44531659897 in words is "forty-four billion, five hundred thirty-one million, six hundred fifty-nine thousand, eight hundred ninety-seven".