6811977347 has 4 divisors (see below), whose sum is σ = 7785116976. Its totient is φ = 5838837720.

The previous prime is 6811977343. The next prime is 6811977377. The reversal of 6811977347 is 7437791186.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6811977347 - 2² = 6811977343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6811977343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486569804 + ... + 486569817.

It is an arithmetic number, because the mean of its divisors is an integer number (1946279244).

Almost surely, 2^6811977347 is an apocalyptic number.

6811977347 is a deficient number, since it is larger than the sum of its proper divisors (973139629).

6811977347 is an equidigital number, since it uses as much as digits as its factorization.

6811977347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973139628.

The product of its digits is 1778112, while the sum is 53.

The square root of 6811977347 is about 82534.7038947860. The cubic root of 6811977347 is about 1895.6481513828.

The spelling of 6811977347 in words is "six billion, eight hundred eleven million, nine hundred seventy-seven thousand, three hundred forty-seven".