12157750780787 has 2 divisors, whose sum is σ = 12157750780788. Its totient is φ = 12157750780786.

The previous prime is 12157750780699. The next prime is 12157750780837. The reversal of 12157750780787 is 78708705775121.

It is a strong prime.

It is an emirp because it is prime and its reverse (78708705775121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12157750780787 - 2²² = 12157746586483 is a prime.

It is not a weakly prime, because it can be changed into another prime (12157750780687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6078875390393 + 6078875390394.

It is an arithmetic number, because the mean of its divisors is an integer number (6078875390394).

Almost surely, 2^{12157750780787} is an apocalyptic number.

12157750780787 is a deficient number, since it is larger than the sum of its proper divisors (1).

12157750780787 is an equidigital number, since it uses as much as digits as its factorization.

12157750780787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53782400, while the sum is 65.

The spelling of 12157750780787 in words is "twelve trillion, one hundred fifty-seven billion, seven hundred fifty million, seven hundred eighty thousand, seven hundred eighty-seven".