7781316346 has 8 divisors (see below), whose sum is σ = 12179451744. Its totient is φ = 3721499100.

The previous prime is 7781316341. The next prime is 7781316349. The reversal of 7781316346 is 6436131877.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (46), and also a Moran number because the ratio is a prime number: 169159051 = 7781316346 / (7 + 7 + 8 + 1 + 3 + 1 + 6 + 3 + 4 + 6).

It is a junction number, because it is equal to n+sod(n) for n = 7781316296 and 7781316305.

It is not an unprimeable number, because it can be changed into a prime (7781316341) 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, 84579480 + ... + 84579571.

It is an arithmetic number, because the mean of its divisors is an integer number (1522431468).

Almost surely, 2^7781316346 is an apocalyptic number.

7781316346 is a deficient number, since it is larger than the sum of its proper divisors (4398135398).

7781316346 is a wasteful number, since it uses less digits than its factorization.

7781316346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169159076.

The product of its digits is 508032, while the sum is 46.

The square root of 7781316346 is about 88211.7698836159. The cubic root of 7781316346 is about 1981.6077430796.

The spelling of 7781316346 in words is "seven billion, seven hundred eighty-one million, three hundred sixteen thousand, three hundred forty-six".