65000019393 has 12 divisors (see below), whose sum is σ = 93905994468. Its totient is φ = 43325464320.

The previous prime is 65000019373. The next prime is 65000019463. The reversal of 65000019393 is 39391000056.

It can be written as a sum of positive squares in 2 ways, for example, as 44467422129 + 20532597264 = 210873^2 + 143292^2 .

It is not a de Polignac number, because 65000019393 - 2⁵ = 65000019361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65000019353) 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 11 ways as a sum of consecutive naturals, for example, 604380 + ... + 703757.

It is an arithmetic number, because the mean of its divisors is an integer number (7825499539).

Almost surely, 2^65000019393 is an apocalyptic number.

It is an amenable number.

65000019393 is a deficient number, since it is larger than the sum of its proper divisors (28905975075).

65000019393 is a wasteful number, since it uses less digits than its factorization.

65000019393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313664 (or 1313661 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 36.

The spelling of 65000019393 in words is "sixty-five billion, nineteen thousand, three hundred ninety-three".