44646664633 has 2 divisors, whose sum is σ = 44646664634. Its totient is φ = 44646664632.

The previous prime is 44646664591. The next prime is 44646664649. The reversal of 44646664633 is 33646664644.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42992778409 + 1653886224 = 207347^2 + 40668^2 .

It is a cyclic number.

It is not a de Polignac number, because 44646664633 - 2³³ = 36056730041 is a prime.

It is not a weakly prime, because it can be changed into another prime (44646664663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22323332316 + 22323332317.

It is an arithmetic number, because the mean of its divisors is an integer number (22323332317).

Almost surely, 2^44646664633 is an apocalyptic number.

It is an amenable number.

44646664633 is a deficient number, since it is larger than the sum of its proper divisors (1).

44646664633 is an equidigital number, since it uses as much as digits as its factorization.

44646664633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17915904, while the sum is 52.

The spelling of 44646664633 in words is "forty-four billion, six hundred forty-six million, six hundred sixty-four thousand, six hundred thirty-three".