780334266449 has 4 divisors (see below), whose sum is σ = 785502043200. Its totient is φ = 775166489700.

The previous prime is 780334266367. The next prime is 780334266457. The reversal of 780334266449 is 944662433087.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-780334266449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 780334266394 and 780334266403.

It is not an unprimeable number, because it can be changed into a prime (780334466449) 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 in 3 ways as a sum of consecutive naturals, for example, 2583888149 + ... + 2583888450.

It is an arithmetic number, because the mean of its divisors is an integer number (196375510800).

Almost surely, 2^780334266449 is an apocalyptic number.

It is an amenable number.

780334266449 is a deficient number, since it is larger than the sum of its proper divisors (5167776751).

780334266449 is a wasteful number, since it uses less digits than its factorization.

780334266449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5167776750.

The product of its (nonzero) digits is 20901888, while the sum is 56.

The spelling of 780334266449 in words is "seven hundred eighty billion, three hundred thirty-four million, two hundred sixty-six thousand, four hundred forty-nine".