44392866613 has 2 divisors, whose sum is σ = 44392866614. Its totient is φ = 44392866612.

The previous prime is 44392866607. The next prime is 44392866647. The reversal of 44392866613 is 31666829344.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33203035089 + 11189831524 = 182217^2 + 105782^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44392866613 is a prime.

It is a super-2 number, since 2×44392866613² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44392866013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22196433306 + 22196433307.

It is an arithmetic number, because the mean of its divisors is an integer number (22196433307).

Almost surely, 2^44392866613 is an apocalyptic number.

It is an amenable number.

44392866613 is a deficient number, since it is larger than the sum of its proper divisors (1).

44392866613 is an equidigital number, since it uses as much as digits as its factorization.

44392866613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4478976, while the sum is 52.

The spelling of 44392866613 in words is "forty-four billion, three hundred ninety-two million, eight hundred sixty-six thousand, six hundred thirteen".