65840973199 has 2 divisors, whose sum is σ = 65840973200. Its totient is φ = 65840973198.

The previous prime is 65840973193. The next prime is 65840973257. The reversal of 65840973199 is 99137904856.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65840973199 - 2²⁹ = 65304102287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65840973193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32920486599 + 32920486600.

It is an arithmetic number, because the mean of its divisors is an integer number (32920486600).

Almost surely, 2^65840973199 is an apocalyptic number.

65840973199 is a deficient number, since it is larger than the sum of its proper divisors (1).

65840973199 is an equidigital number, since it uses as much as digits as its factorization.

65840973199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14696640, while the sum is 61.

The spelling of 65840973199 in words is "sixty-five billion, eight hundred forty million, nine hundred seventy-three thousand, one hundred ninety-nine".