11061644639 has 2 divisors, whose sum is σ = 11061644640. Its totient is φ = 11061644638.

The previous prime is 11061644567. The next prime is 11061644647. The reversal of 11061644639 is 93644616011.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11061644639 - 2¹⁶ = 11061579103 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11061644596 and 11061644605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11061644669) 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, 5530822319 + 5530822320.

It is an arithmetic number, because the mean of its divisors is an integer number (5530822320).

Almost surely, 2^11061644639 is an apocalyptic number.

11061644639 is a deficient number, since it is larger than the sum of its proper divisors (1).

11061644639 is an equidigital number, since it uses as much as digits as its factorization.

11061644639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 11061644639 in words is "eleven billion, sixty-one million, six hundred forty-four thousand, six hundred thirty-nine".