780340474369 has 4 divisors (see below), whose sum is σ = 780389982144. Its totient is φ = 780290966596.

The previous prime is 780340474363. The next prime is 780340474421. The reversal of 780340474369 is 963474043087.

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 not a de Polignac number, because 780340474369 - 2⁵ = 780340474337 is a prime.

It is a super-2 number, since 2×780340474369² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (780340474363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24730237 + ... + 24761770.

It is an arithmetic number, because the mean of its divisors is an integer number (195097495536).

Almost surely, 2^780340474369 is an apocalyptic number.

It is an amenable number.

780340474369 is a deficient number, since it is larger than the sum of its proper divisors (49507775).

780340474369 is a wasteful number, since it uses less digits than its factorization.

780340474369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49507774.

The product of its (nonzero) digits is 12192768, while the sum is 55.

The spelling of 780340474369 in words is "seven hundred eighty billion, three hundred forty million, four hundred seventy-four thousand, three hundred sixty-nine".