12115675757 has 2 divisors, whose sum is σ = 12115675758. Its totient is φ = 12115675756.

The previous prime is 12115675739. The next prime is 12115675763. The reversal of 12115675757 is 75757651121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9061897636 + 3053778121 = 95194^2 + 55261^2 .

It is an emirp because it is prime and its reverse (75757651121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12115675757 - 2⁸ = 12115675501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12115675457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6057837878 + 6057837879.

It is an arithmetic number, because the mean of its divisors is an integer number (6057837879).

Almost surely, 2^12115675757 is an apocalyptic number.

It is an amenable number.

12115675757 is a deficient number, since it is larger than the sum of its proper divisors (1).

12115675757 is an equidigital number, since it uses as much as digits as its factorization.

12115675757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 514500, while the sum is 47.

The spelling of 12115675757 in words is "twelve billion, one hundred fifteen million, six hundred seventy-five thousand, seven hundred fifty-seven".