44645090621 has 2 divisors, whose sum is σ = 44645090622. Its totient is φ = 44645090620.

The previous prime is 44645090599. The next prime is 44645090641. The reversal of 44645090621 is 12609054644.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27951158596 + 16693932025 = 167186^2 + 129205^2 .

It is a cyclic number.

It is not a de Polignac number, because 44645090621 - 2¹⁴ = 44645074237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44645090641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22322545310 + 22322545311.

It is an arithmetic number, because the mean of its divisors is an integer number (22322545311).

Almost surely, 2^44645090621 is an apocalyptic number.

It is an amenable number.

44645090621 is a deficient number, since it is larger than the sum of its proper divisors (1).

44645090621 is an equidigital number, since it uses as much as digits as its factorization.

44645090621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 44645090621 in words is "forty-four billion, six hundred forty-five million, ninety thousand, six hundred twenty-one".