65347684777 has 2 divisors, whose sum is σ = 65347684778. Its totient is φ = 65347684776.

The previous prime is 65347684747. The next prime is 65347684783. The reversal of 65347684777 is 77748674356.

65347684777 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64426622976 + 921061801 = 253824^2 + 30349^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65347684777 is a prime.

It is not a weakly prime, because it can be changed into another prime (65347684747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32673842388 + 32673842389.

It is an arithmetic number, because the mean of its divisors is an integer number (32673842389).

Almost surely, 2^65347684777 is an apocalyptic number.

It is an amenable number.

65347684777 is a deficient number, since it is larger than the sum of its proper divisors (1).

65347684777 is an equidigital number, since it uses as much as digits as its factorization.

65347684777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165957120, while the sum is 64.

The spelling of 65347684777 in words is "sixty-five billion, three hundred forty-seven million, six hundred eighty-four thousand, seven hundred seventy-seven".