780342345001 has 2 divisors, whose sum is σ = 780342345002. Its totient is φ = 780342345000.

The previous prime is 780342344993. The next prime is 780342345049. The reversal of 780342345001 is 100543243087.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 476935266025 + 303407078976 = 690605^2 + 550824^2 .

It is a cyclic number.

It is not a de Polignac number, because 780342345001 - 2³ = 780342344993 is a prime.

It is not a weakly prime, because it can be changed into another prime (780346345001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390171172500 + 390171172501.

It is an arithmetic number, because the mean of its divisors is an integer number (390171172501).

Almost surely, 2^780342345001 is an apocalyptic number.

It is an amenable number.

780342345001 is a deficient number, since it is larger than the sum of its proper divisors (1).

780342345001 is an equidigital number, since it uses as much as digits as its factorization.

780342345001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 37.

Adding to 780342345001 its reverse (100543243087), we get a palindrome (880885588088).

The spelling of 780342345001 in words is "seven hundred eighty billion, three hundred forty-two million, three hundred forty-five thousand, one".