11233557779 has 2 divisors, whose sum is σ = 11233557780. Its totient is φ = 11233557778.

The previous prime is 11233557763. The next prime is 11233557781. The reversal of 11233557779 is 97775533211.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11233557779 - 2⁴ = 11233557763 is a prime.

Together with 11233557781, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (11833557779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5616778889 + 5616778890.

It is an arithmetic number, because the mean of its divisors is an integer number (5616778890).

Almost surely, 2^11233557779 is an apocalyptic number.

11233557779 is a deficient number, since it is larger than the sum of its proper divisors (1).

11233557779 is an equidigital number, since it uses as much as digits as its factorization.

11233557779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1389150, while the sum is 50.

The spelling of 11233557779 in words is "eleven billion, two hundred thirty-three million, five hundred fifty-seven thousand, seven hundred seventy-nine".