11638479528061 has 2 divisors, whose sum is σ = 11638479528062. Its totient is φ = 11638479528060.

The previous prime is 11638479528041. The next prime is 11638479528079. The reversal of 11638479528061 is 16082597483611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10248129612900 + 1390349915161 = 3201270^2 + 1179131^2 .

It is a cyclic number.

It is not a de Polignac number, because 11638479528061 - 2²⁹ = 11637942657149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11638479528041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5819239764030 + 5819239764031.

It is an arithmetic number, because the mean of its divisors is an integer number (5819239764031).

It is a 1-persistent number, because it is pandigital, but 2⋅11638479528061 = 23276959056122 is not.

Almost surely, 2^{11638479528061} is an apocalyptic number.

It is an amenable number.

11638479528061 is a deficient number, since it is larger than the sum of its proper divisors (1).

11638479528061 is an equidigital number, since it uses as much as digits as its factorization.

11638479528061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17418240, while the sum is 61.

The spelling of 11638479528061 in words is "eleven trillion, six hundred thirty-eight billion, four hundred seventy-nine million, five hundred twenty-eight thousand, sixty-one".