65603471893 has 2 divisors, whose sum is σ = 65603471894. Its totient is φ = 65603471892.

The previous prime is 65603471863. The next prime is 65603471951. The reversal of 65603471893 is 39817430656.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62992466289 + 2611005604 = 250983^2 + 51098^2 .

It is a cyclic number.

It is not a de Polignac number, because 65603471893 - 2²⁵ = 65569917461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65603471893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65603471863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32801735946 + 32801735947.

It is an arithmetic number, because the mean of its divisors is an integer number (32801735947).

Almost surely, 2^65603471893 is an apocalyptic number.

It is an amenable number.

65603471893 is a deficient number, since it is larger than the sum of its proper divisors (1).

65603471893 is an equidigital number, since it uses as much as digits as its factorization.

65603471893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 52.

The spelling of 65603471893 in words is "sixty-five billion, six hundred three million, four hundred seventy-one thousand, eight hundred ninety-three".