65898784901 has 2 divisors, whose sum is σ = 65898784902. Its totient is φ = 65898784900.

The previous prime is 65898784891. The next prime is 65898784909. The reversal of 65898784901 is 10948789856.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40461724801 + 25437060100 = 201151^2 + 159490^2 .

It is a cyclic number.

It is not a de Polignac number, because 65898784901 - 2²⁶ = 65831676037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65898784909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32949392450 + 32949392451.

It is an arithmetic number, because the mean of its divisors is an integer number (32949392451).

Almost surely, 2^65898784901 is an apocalyptic number.

It is an amenable number.

65898784901 is a deficient number, since it is larger than the sum of its proper divisors (1).

65898784901 is an equidigital number, since it uses as much as digits as its factorization.

65898784901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34836480, while the sum is 65.

The spelling of 65898784901 in words is "sixty-five billion, eight hundred ninety-eight million, seven hundred eighty-four thousand, nine hundred one".