5440005310021 has 2 divisors, whose sum is σ = 5440005310022. Its totient is φ = 5440005310020.

The previous prime is 5440005310009. The next prime is 5440005310037. The reversal of 5440005310021 is 1200135000445.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2850319747521 + 2589685562500 = 1688289^2 + 1609250^2 .

It is a cyclic number.

It is not a de Polignac number, because 5440005310021 - 2⁵ = 5440005309989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5440005310321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2720002655010 + 2720002655011.

It is an arithmetic number, because the mean of its divisors is an integer number (2720002655011).

Almost surely, 2^{5440005310021} is an apocalyptic number.

It is an amenable number.

5440005310021 is a deficient number, since it is larger than the sum of its proper divisors (1).

5440005310021 is an equidigital number, since it uses as much as digits as its factorization.

5440005310021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 25.

The spelling of 5440005310021 in words is "five trillion, four hundred forty billion, five million, three hundred ten thousand, twenty-one".