44440493287681 has 4 divisors (see below), whose sum is σ = 44440508819200. Its totient is φ = 44440477756164.

The previous prime is 44440493287591. The next prime is 44440493287739. The reversal of 44440493287681 is 18678239404444.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 44440493287681 - 2¹¹ = 44440493285633 is a prime.

It is a super-2 number, since 2×44440493287681² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44440493287781) 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, 2092041 + ... + 9656998.

It is an arithmetic number, because the mean of its divisors is an integer number (11110127204800).

Almost surely, 2^{44440493287681} is an apocalyptic number.

It is an amenable number.

44440493287681 is a deficient number, since it is larger than the sum of its proper divisors (15531519).

44440493287681 is a wasteful number, since it uses less digits than its factorization.

44440493287681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15531518.

The product of its (nonzero) digits is 148635648, while the sum is 64.

The spelling of 44440493287681 in words is "forty-four trillion, four hundred forty billion, four hundred ninety-three million, two hundred eighty-seven thousand, six hundred eighty-one".