11111115049 has 2 divisors, whose sum is σ = 11111115050. Its totient is φ = 11111115048.

The previous prime is 11111114951. The next prime is 11111115053. The reversal of 11111115049 is 94051111111.

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., 6739260649 + 4371854400 = 82093^2 + 66120^2 .

It is a cyclic number.

It is not a de Polignac number, because 11111115049 - 2¹⁹ = 11110590761 is a prime.

It is a super-2 number, since 2×11111115049² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11111515049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555557524 + 5555557525.

It is an arithmetic number, because the mean of its divisors is an integer number (5555557525).

Almost surely, 2^11111115049 is an apocalyptic number.

It is an amenable number.

11111115049 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111115049 is an equidigital number, since it uses as much as digits as its factorization.

11111115049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 25.

The spelling of 11111115049 in words is "eleven billion, one hundred eleven million, one hundred fifteen thousand, forty-nine".