65020717849 has 2 divisors, whose sum is σ = 65020717850. Its totient is φ = 65020717848.

The previous prime is 65020717837. The next prime is 65020717877. The reversal of 65020717849 is 94871702056.

65020717849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64233354249 + 787363600 = 253443^2 + 28060^2 .

It is a cyclic number.

It is not a de Polignac number, because 65020717849 - 2⁹ = 65020717337 is a prime.

It is not a weakly prime, because it can be changed into another prime (65020717829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32510358924 + 32510358925.

It is an arithmetic number, because the mean of its divisors is an integer number (32510358925).

Almost surely, 2^65020717849 is an apocalyptic number.

It is an amenable number.

65020717849 is a deficient number, since it is larger than the sum of its proper divisors (1).

65020717849 is an equidigital number, since it uses as much as digits as its factorization.

65020717849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 65020717849 in words is "sixty-five billion, twenty million, seven hundred seventeen thousand, eight hundred forty-nine".