11355666779 has 2 divisors, whose sum is σ = 11355666780. Its totient is φ = 11355666778.

The previous prime is 11355666769. The next prime is 11355666809. The reversal of 11355666779 is 97766655311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11355666779 - 2²⁴ = 11338889563 is a prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (11355666719) 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, 5677833389 + 5677833390.

It is an arithmetic number, because the mean of its divisors is an integer number (5677833390).

Almost surely, 2^11355666779 is an apocalyptic number.

11355666779 is a deficient number, since it is larger than the sum of its proper divisors (1).

11355666779 is an equidigital number, since it uses as much as digits as its factorization.

11355666779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7144200, while the sum is 56.

The spelling of 11355666779 in words is "eleven billion, three hundred fifty-five million, six hundred sixty-six thousand, seven hundred seventy-nine".