44417888521 has 4 divisors (see below), whose sum is σ = 44418943492. Its totient is φ = 44416833552.

The previous prime is 44417888509. The next prime is 44417888539. The reversal of 44417888521 is 12588871444.

It is a happy number.

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 6783828496 + 37634060025 = 82364^2 + 193995^2 .

It is a cyclic number.

It is not a de Polignac number, because 44417888521 - 2⁷ = 44417888393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44417888561) 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, 461586 + ... + 549451.

It is an arithmetic number, because the mean of its divisors is an integer number (11104735873).

Almost surely, 2^44417888521 is an apocalyptic number.

It is an amenable number.

44417888521 is a deficient number, since it is larger than the sum of its proper divisors (1054971).

44417888521 is a wasteful number, since it uses less digits than its factorization.

44417888521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054970.

The product of its digits is 2293760, while the sum is 52.

The spelling of 44417888521 in words is "forty-four billion, four hundred seventeen million, eight hundred eighty-eight thousand, five hundred twenty-one".