65620118809 has 8 divisors (see below), whose sum is σ = 75093495488. Its totient is φ = 56171510640.

The previous prime is 65620118807. The next prime is 65620118819. The reversal of 65620118809 is 90881102656.

65620118809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 65620118809 - 2¹ = 65620118807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65620118807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6186447 + ... + 6197044.

It is an arithmetic number, because the mean of its divisors is an integer number (9386686936).

Almost surely, 2^65620118809 is an apocalyptic number.

It is an amenable number.

65620118809 is a deficient number, since it is larger than the sum of its proper divisors (9473376679).

65620118809 is a wasteful number, since it uses less digits than its factorization.

65620118809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12384255.

The product of its (nonzero) digits is 207360, while the sum is 46.

The spelling of 65620118809 in words is "sixty-five billion, six hundred twenty million, one hundred eighteen thousand, eight hundred nine".