11326616381 has 2 divisors, whose sum is σ = 11326616382. Its totient is φ = 11326616380.

The previous prime is 11326616311. The next prime is 11326616407. The reversal of 11326616381 is 18361662311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10406040100 + 920576281 = 102010^2 + 30341^2 .

It is a cyclic number.

It is not a de Polignac number, because 11326616381 - 2¹⁴ = 11326599997 is a prime.

It is a super-2 number, since 2×11326616381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11326616311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5663308190 + 5663308191.

It is an arithmetic number, because the mean of its divisors is an integer number (5663308191).

Almost surely, 2^11326616381 is an apocalyptic number.

It is an amenable number.

11326616381 is a deficient number, since it is larger than the sum of its proper divisors (1).

11326616381 is an equidigital number, since it uses as much as digits as its factorization.

11326616381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 38.

The spelling of 11326616381 in words is "eleven billion, three hundred twenty-six million, six hundred sixteen thousand, three hundred eighty-one".