65620118801 has 4 divisors (see below), whose sum is σ = 66519024612. Its totient is φ = 64721212992.

The previous prime is 65620118749. The next prime is 65620118807. The reversal of 65620118801 is 10881102656.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14544118801 + 51076000000 = 120599^2 + 226000^2 .

It is a cyclic number.

It is not a de Polignac number, because 65620118801 - 2¹⁴ = 65620102417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65620118807) 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 3 ways as a sum of consecutive naturals, for example, 449452796 + ... + 449452941.

It is an arithmetic number, because the mean of its divisors is an integer number (16629756153).

Almost surely, 2^65620118801 is an apocalyptic number.

It is an amenable number.

65620118801 is a deficient number, since it is larger than the sum of its proper divisors (898905811).

65620118801 is an equidigital number, since it uses as much as digits as its factorization.

65620118801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898905810.

The product of its (nonzero) digits is 23040, while the sum is 38.

The spelling of 65620118801 in words is "sixty-five billion, six hundred twenty million, one hundred eighteen thousand, eight hundred one".