65448193805 has 16 divisors (see below), whose sum is σ = 79289947440. Its totient is φ = 51857528832.

The previous prime is 65448193799. The next prime is 65448193831. The reversal of 65448193805 is 50839184456.

65448193805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 8890792681 + 56557401124 = 94291^2 + 237818^2 .

It is a cyclic number.

It is not a de Polignac number, because 65448193805 - 2²⁸ = 65179758349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1425467 + ... + 1470663.

It is an arithmetic number, because the mean of its divisors is an integer number (4955621715).

Almost surely, 2^65448193805 is an apocalyptic number.

It is an amenable number.

65448193805 is a deficient number, since it is larger than the sum of its proper divisors (13841753635).

65448193805 is a wasteful number, since it uses less digits than its factorization.

65448193805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47968.

The product of its (nonzero) digits is 4147200, while the sum is 53.

The spelling of 65448193805 in words is "sixty-five billion, four hundred forty-eight million, one hundred ninety-three thousand, eight hundred five".