65349886249 has 2 divisors, whose sum is σ = 65349886250. Its totient is φ = 65349886248.

The previous prime is 65349886207. The next prime is 65349886289. The reversal of 65349886249 is 94268894356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56223523225 + 9126363024 = 237115^2 + 95532^2 .

It is a cyclic number.

It is not a de Polignac number, because 65349886249 - 2²¹ = 65347789097 is a prime.

It is not a weakly prime, because it can be changed into another prime (65349886289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32674943124 + 32674943125.

It is an arithmetic number, because the mean of its divisors is an integer number (32674943125).

Almost surely, 2^65349886249 is an apocalyptic number.

It is an amenable number.

65349886249 is a deficient number, since it is larger than the sum of its proper divisors (1).

65349886249 is an equidigital number, since it uses as much as digits as its factorization.

65349886249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 89579520, while the sum is 64.

The spelling of 65349886249 in words is "sixty-five billion, three hundred forty-nine million, eight hundred eighty-six thousand, two hundred forty-nine".