65393909999 has 8 divisors (see below), whose sum is σ = 71341125840. Its totient is φ = 59447080000.

The previous prime is 65393909983. The next prime is 65393910019. The reversal of 65393909999 is 99990939356.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65393909999 - 2⁴ = 65393909983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65393909899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346307 + ... + 500715.

It is an arithmetic number, because the mean of its divisors is an integer number (8917640730).

Almost surely, 2^65393909999 is an apocalyptic number.

65393909999 is a deficient number, since it is larger than the sum of its proper divisors (5947215841).

65393909999 is a wasteful number, since it uses less digits than its factorization.

65393909999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192921.

The product of its (nonzero) digits is 143489070, while the sum is 71.

The spelling of 65393909999 in words is "sixty-five billion, three hundred ninety-three million, nine hundred nine thousand, nine hundred ninety-nine".