1347788615791 has 2 divisors, whose sum is σ = 1347788615792. Its totient is φ = 1347788615790.

The previous prime is 1347788615707. The next prime is 1347788615843. The reversal of 1347788615791 is 1975168877431.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1347788615791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1347788612791) 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, 673894307895 + 673894307896.

It is an arithmetic number, because the mean of its divisors is an integer number (673894307896).

Almost surely, 2^{1347788615791} is an apocalyptic number.

1347788615791 is a deficient number, since it is larger than the sum of its proper divisors (1).

1347788615791 is an equidigital number, since it uses as much as digits as its factorization.

1347788615791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 71124480, while the sum is 67.

The spelling of 1347788615791 in words is "one trillion, three hundred forty-seven billion, seven hundred eighty-eight million, six hundred fifteen thousand, seven hundred ninety-one".