65417620245989 has 4 divisors (see below), whose sum is σ = 71364676632000. Its totient is φ = 59470563859980.

The previous prime is 65417620245973. The next prime is 65417620246037. The reversal of 65417620245989 is 98954202671456.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65417620245989 - 2⁴ = 65417620245973 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65417620245589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2973528192989 + ... + 2973528193010.

It is an arithmetic number, because the mean of its divisors is an integer number (17841169158000).

Almost surely, 2^{65417620245989} is an apocalyptic number.

It is an amenable number.

65417620245989 is a deficient number, since it is larger than the sum of its proper divisors (5947056386011).

65417620245989 is a wasteful number, since it uses less digits than its factorization.

65417620245989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5947056386010.

The product of its (nonzero) digits is 261273600, while the sum is 68.

The spelling of 65417620245989 in words is "sixty-five trillion, four hundred seventeen billion, six hundred twenty million, two hundred forty-five thousand, nine hundred eighty-nine".