6781313951 has 16 divisors (see below), whose sum is σ = 7114296000. Its totient is φ = 6463838304.

The previous prime is 6781313933. The next prime is 6781313969. The reversal of 6781313951 is 1593131876.

It is an interprime number because it is at equal distance from previous prime (6781313933) and next prime (6781313969).

It is not a de Polignac number, because 6781313951 - 2¹⁸ = 6781051807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6781313911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4245485 + ... + 4247081.

It is an arithmetic number, because the mean of its divisors is an integer number (444643500).

Almost surely, 2^6781313951 is an apocalyptic number.

6781313951 is a deficient number, since it is larger than the sum of its proper divisors (332982049).

6781313951 is an equidigital number, since it uses as much as digits as its factorization.

6781313951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015 (or 1969 counting only the distinct ones).

The product of its digits is 136080, while the sum is 44.

The square root of 6781313951 is about 82348.7337546850. The cubic root of 6781313951 is about 1892.7995195648.

The spelling of 6781313951 in words is "six billion, seven hundred eighty-one million, three hundred thirteen thousand, nine hundred fifty-one".