11775279613 has 2 divisors, whose sum is σ = 11775279614. Its totient is φ = 11775279612.

The previous prime is 11775279589. The next prime is 11775279641. The reversal of 11775279613 is 31697257711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6796848249 + 4978431364 = 82443^2 + 70558^2 .

It is a cyclic number.

It is not a de Polignac number, because 11775279613 - 2⁹ = 11775279101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11775279643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5887639806 + 5887639807.

It is an arithmetic number, because the mean of its divisors is an integer number (5887639807).

Almost surely, 2^11775279613 is an apocalyptic number.

It is an amenable number.

11775279613 is a deficient number, since it is larger than the sum of its proper divisors (1).

11775279613 is an equidigital number, since it uses as much as digits as its factorization.

11775279613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 555660, while the sum is 49.

The spelling of 11775279613 in words is "eleven billion, seven hundred seventy-five million, two hundred seventy-nine thousand, six hundred thirteen".