4445564331613 has 2 divisors, whose sum is σ = 4445564331614. Its totient is φ = 4445564331612.

The previous prime is 4445564331599. The next prime is 4445564331631. The reversal of 4445564331613 is 3161334655444.

Together with next prime (4445564331631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2543253078564 + 1902311253049 = 1594758^2 + 1379243^2 .

It is a cyclic number.

It is not a de Polignac number, because 4445564331613 - 2⁴¹ = 2246541076061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4445564331643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2222782165806 + 2222782165807.

It is an arithmetic number, because the mean of its divisors is an integer number (2222782165807).

Almost surely, 2^{4445564331613} is an apocalyptic number.

It is an amenable number.

4445564331613 is a deficient number, since it is larger than the sum of its proper divisors (1).

4445564331613 is an equidigital number, since it uses as much as digits as its factorization.

4445564331613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6220800, while the sum is 49.

The spelling of 4445564331613 in words is "four trillion, four hundred forty-five billion, five hundred sixty-four million, three hundred thirty-one thousand, six hundred thirteen".