44421655641 has 48 divisors (see below), whose sum is σ = 67645502400. Its totient is φ = 25878948480.

The previous prime is 44421655631. The next prime is 44421655709. The reversal of 44421655641 is 14655612444.

It is a happy number.

It is not a de Polignac number, because 44421655641 - 2⁵ = 44421655609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 44421655593 and 44421655602.

It is not an unprimeable number, because it can be changed into a prime (44421655601) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2401470 + ... + 2419896.

It is an arithmetic number, because the mean of its divisors is an integer number (1409281300).

Almost surely, 2^44421655641 is an apocalyptic number.

It is an amenable number.

44421655641 is a deficient number, since it is larger than the sum of its proper divisors (23223846759).

44421655641 is a wasteful number, since it uses less digits than its factorization.

44421655641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18710 (or 18699 counting only the distinct ones).

The product of its digits is 460800, while the sum is 42.

The spelling of 44421655641 in words is "forty-four billion, four hundred twenty-one million, six hundred fifty-five thousand, six hundred forty-one".