65672877709 has 2 divisors, whose sum is σ = 65672877710. Its totient is φ = 65672877708.

The previous prime is 65672877593. The next prime is 65672877719. The reversal of 65672877709 is 90777827656.

65672877709 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., 57218075209 + 8454802500 = 239203^2 + 91950^2 .

It is a cyclic number.

It is not a de Polignac number, because 65672877709 - 2⁷ = 65672877581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65672877719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32836438854 + 32836438855.

It is an arithmetic number, because the mean of its divisors is an integer number (32836438855).

Almost surely, 2^65672877709 is an apocalyptic number.

It is an amenable number.

65672877709 is a deficient number, since it is larger than the sum of its proper divisors (1).

65672877709 is an equidigital number, since it uses as much as digits as its factorization.

65672877709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62233920, while the sum is 64.

It can be divided in two parts, 656728 and 77709, that added together give a palindrome (734437).

The spelling of 65672877709 in words is "sixty-five billion, six hundred seventy-two million, eight hundred seventy-seven thousand, seven hundred nine".