6347721230077 has 2 divisors, whose sum is σ = 6347721230078. Its totient is φ = 6347721230076.

The previous prime is 6347721230069. The next prime is 6347721230117. The reversal of 6347721230077 is 7700321277436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6268869220441 + 78852009636 = 2503771^2 + 280806^2 .

It is a cyclic number.

It is not a de Polignac number, because 6347721230077 - 2³ = 6347721230069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6347721230077.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6347721230377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3173860615038 + 3173860615039.

It is an arithmetic number, because the mean of its divisors is an integer number (3173860615039).

Almost surely, 2^{6347721230077} is an apocalyptic number.

It is an amenable number.

6347721230077 is a deficient number, since it is larger than the sum of its proper divisors (1).

6347721230077 is an equidigital number, since it uses as much as digits as its factorization.

6347721230077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2074464, while the sum is 49.

The spelling of 6347721230077 in words is "six trillion, three hundred forty-seven billion, seven hundred twenty-one million, two hundred thirty thousand, seventy-seven".