44002337634821 has 2 divisors, whose sum is σ = 44002337634822. Its totient is φ = 44002337634820.

The previous prime is 44002337634797. The next prime is 44002337634823. The reversal of 44002337634821 is 12843673320044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43067850012100 + 934487622721 = 6562610^2 + 966689^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44002337634821 is a prime.

Together with 44002337634823, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44002337634823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22001168817410 + 22001168817411.

It is an arithmetic number, because the mean of its divisors is an integer number (22001168817411).

Almost surely, 2^{44002337634821} is an apocalyptic number.

It is an amenable number.

44002337634821 is a deficient number, since it is larger than the sum of its proper divisors (1).

44002337634821 is an equidigital number, since it uses as much as digits as its factorization.

44002337634821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2322432, while the sum is 47.

The spelling of 44002337634821 in words is "forty-four trillion, two billion, three hundred thirty-seven million, six hundred thirty-four thousand, eight hundred twenty-one".