11638479466633 has 2 divisors, whose sum is σ = 11638479466634. Its totient is φ = 11638479466632.

The previous prime is 11638479466609. The next prime is 11638479466651. The reversal of 11638479466633 is 33666497483611.

11638479466633 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11633467959369 + 5011507264 = 3410787^2 + 70792^2 .

It is a cyclic number.

It is not a de Polignac number, because 11638479466633 - 2³⁷ = 11501040513161 is a prime.

It is not a weakly prime, because it can be changed into another prime (11638479416633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5819239733316 + 5819239733317.

It is an arithmetic number, because the mean of its divisors is an integer number (5819239733317).

Almost surely, 2^{11638479466633} is an apocalyptic number.

It is an amenable number.

11638479466633 is a deficient number, since it is larger than the sum of its proper divisors (1).

11638479466633 is an equidigital number, since it uses as much as digits as its factorization.

11638479466633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282175488, while the sum is 67.

The spelling of 11638479466633 in words is "eleven trillion, six hundred thirty-eight billion, four hundred seventy-nine million, four hundred sixty-six thousand, six hundred thirty-three".