444622414730621 has 2 divisors, whose sum is σ = 444622414730622. Its totient is φ = 444622414730620.

The previous prime is 444622414730573. The next prime is 444622414730653. The reversal of 444622414730621 is 126037414226444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 349432361472100 + 95190053258521 = 18693110^2 + 9756539^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444622414730621 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 444622414730621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444622414730321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222311207365310 + 222311207365311.

It is an arithmetic number, because the mean of its divisors is an integer number (222311207365311).

Almost surely, 2^{444622414730621} is an apocalyptic number.

It is an amenable number.

444622414730621 is a deficient number, since it is larger than the sum of its proper divisors (1).

444622414730621 is an equidigital number, since it uses as much as digits as its factorization.

444622414730621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6193152, while the sum is 50.

The spelling of 444622414730621 in words is "four hundred forty-four trillion, six hundred twenty-two billion, four hundred fourteen million, seven hundred thirty thousand, six hundred twenty-one".