44662636817 has 2 divisors, whose sum is σ = 44662636818. Its totient is φ = 44662636816.

The previous prime is 44662636787. The next prime is 44662636819. The reversal of 44662636817 is 71863626644.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39616523521 + 5046113296 = 199039^2 + 71036^2 .

It is a cyclic number.

It is not a de Polignac number, because 44662636817 - 2²² = 44658442513 is a prime.

It is a super-2 number, since 2×44662636817² (a number of 22 digits) contains 22 as substring.

Together with 44662636819, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (44662636819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22331318408 + 22331318409.

It is an arithmetic number, because the mean of its divisors is an integer number (22331318409).

Almost surely, 2^44662636817 is an apocalyptic number.

It is an amenable number.

44662636817 is a deficient number, since it is larger than the sum of its proper divisors (1).

44662636817 is an equidigital number, since it uses as much as digits as its factorization.

44662636817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6967296, while the sum is 53.

The spelling of 44662636817 in words is "forty-four billion, six hundred sixty-two million, six hundred thirty-six thousand, eight hundred seventeen".