10002444621539 has 2 divisors, whose sum is σ = 10002444621540. Its totient is φ = 10002444621538.

The previous prime is 10002444621509. The next prime is 10002444621667. The reversal of 10002444621539 is 93512644420001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10002444621539 - 2⁸ = 10002444621283 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10002444621496 and 10002444621505.

It is not a weakly prime, because it can be changed into another prime (10002444621509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5001222310769 + 5001222310770.

It is an arithmetic number, because the mean of its divisors is an integer number (5001222310770).

Almost surely, 2^{10002444621539} is an apocalyptic number.

10002444621539 is a deficient number, since it is larger than the sum of its proper divisors (1).

10002444621539 is an equidigital number, since it uses as much as digits as its factorization.

10002444621539 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 10002444621539 in words is "ten trillion, two billion, four hundred forty-four million, six hundred twenty-one thousand, five hundred thirty-nine".