65845622801 has 4 divisors (see below), whose sum is σ = 75252140352. Its totient is φ = 56439105252.

The previous prime is 65845622771. The next prime is 65845622807. The reversal of 65845622801 is 10822654856.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65845622801 - 2²⁶ = 65778513937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65845622807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4703258765 + ... + 4703258778.

It is an arithmetic number, because the mean of its divisors is an integer number (18813035088).

Almost surely, 2^65845622801 is an apocalyptic number.

It is an amenable number.

65845622801 is a deficient number, since it is larger than the sum of its proper divisors (9406517551).

65845622801 is an equidigital number, since it uses as much as digits as its factorization.

65845622801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9406517550.

The product of its (nonzero) digits is 921600, while the sum is 47.

The spelling of 65845622801 in words is "sixty-five billion, eight hundred forty-five million, six hundred twenty-two thousand, eight hundred one".