11638479532769 has 2 divisors, whose sum is σ = 11638479532770. Its totient is φ = 11638479532768.

The previous prime is 11638479532733. The next prime is 11638479532787. The reversal of 11638479532769 is 96723597483611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8151670242769 + 3486809290000 = 2855113^2 + 1867300^2 .

It is a cyclic number.

It is not a de Polignac number, because 11638479532769 - 2¹² = 11638479528673 is a prime.

It is a super-2 number, since 2×11638479532769² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11638479532709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5819239766384 + 5819239766385.

It is an arithmetic number, because the mean of its divisors is an integer number (5819239766385).

Almost surely, 2^{11638479532769} is an apocalyptic number.

It is an amenable number.

11638479532769 is a deficient number, since it is larger than the sum of its proper divisors (1).

11638479532769 is an equidigital number, since it uses as much as digits as its factorization.

11638479532769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 411505920, while the sum is 71.

The spelling of 11638479532769 in words is "eleven trillion, six hundred thirty-eight billion, four hundred seventy-nine million, five hundred thirty-two thousand, seven hundred sixty-nine".