65448193859 has 4 divisors (see below), whose sum is σ = 67705028160. Its totient is φ = 63191359560.

The previous prime is 65448193847. The next prime is 65448193879. The reversal of 65448193859 is 95839184456.

65448193859 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65448193859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65448193879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1128417107 + ... + 1128417164.

It is an arithmetic number, because the mean of its divisors is an integer number (16926257040).

Almost surely, 2^65448193859 is an apocalyptic number.

65448193859 is a deficient number, since it is larger than the sum of its proper divisors (2256834301).

65448193859 is a wasteful number, since it uses less digits than its factorization.

65448193859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256834300.

The product of its digits is 37324800, while the sum is 62.

The spelling of 65448193859 in words is "sixty-five billion, four hundred forty-eight million, one hundred ninety-three thousand, eight hundred fifty-nine".