44721307643 has 2 divisors, whose sum is σ = 44721307644. Its totient is φ = 44721307642.

The previous prime is 44721307613. The next prime is 44721307661. The reversal of 44721307643 is 34670312744.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 44721307643 - 2¹² = 44721303547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 44721307643.

It is not a weakly prime, because it can be changed into another prime (44721307613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22360653821 + 22360653822.

It is an arithmetic number, because the mean of its divisors is an integer number (22360653822).

Almost surely, 2^44721307643 is an apocalyptic number.

44721307643 is a deficient number, since it is larger than the sum of its proper divisors (1).

44721307643 is an equidigital number, since it uses as much as digits as its factorization.

44721307643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 41.

The spelling of 44721307643 in words is "forty-four billion, seven hundred twenty-one million, three hundred seven thousand, six hundred forty-three".