11311226749 has 2 divisors, whose sum is σ = 11311226750. Its totient is φ = 11311226748.

The previous prime is 11311226681. The next prime is 11311226761. The reversal of 11311226749 is 94762211311.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11253390724 + 57836025 = 106082^2 + 7605^2 .

It is a cyclic number.

It is not a de Polignac number, because 11311226749 - 2¹³ = 11311218557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11311226779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5655613374 + 5655613375.

It is an arithmetic number, because the mean of its divisors is an integer number (5655613375).

Almost surely, 2^11311226749 is an apocalyptic number.

It is an amenable number.

11311226749 is a deficient number, since it is larger than the sum of its proper divisors (1).

11311226749 is an equidigital number, since it uses as much as digits as its factorization.

11311226749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 37.

The spelling of 11311226749 in words is "eleven billion, three hundred eleven million, two hundred twenty-six thousand, seven hundred forty-nine".