12356136787 has 2 divisors, whose sum is σ = 12356136788. Its totient is φ = 12356136786.

The previous prime is 12356136761. The next prime is 12356136803. The reversal of 12356136787 is 78763165321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12356136787 - 2³¹ = 10208653139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12356136787.

It is not a weakly prime, because it can be changed into another prime (12356134787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6178068393 + 6178068394.

It is an arithmetic number, because the mean of its divisors is an integer number (6178068394).

Almost surely, 2^12356136787 is an apocalyptic number.

12356136787 is a deficient number, since it is larger than the sum of its proper divisors (1).

12356136787 is an equidigital number, since it uses as much as digits as its factorization.

12356136787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 49.

The spelling of 12356136787 in words is "twelve billion, three hundred fifty-six million, one hundred thirty-six thousand, seven hundred eighty-seven".