65117555374861 has 8 divisors (see below), whose sum is σ = 71038123458624. Its totient is φ = 59197119011520.

The previous prime is 65117555374853. The next prime is 65117555374901. The reversal of 65117555374861 is 16847355571156.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 65117555374861 - 2³ = 65117555374853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65117555374793 and 65117555374802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65117555374661) 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, 31895020 + ... + 33875173.

It is an arithmetic number, because the mean of its divisors is an integer number (8879765432328).

Almost surely, 2^{65117555374861} is an apocalyptic number.

It is an amenable number.

65117555374861 is a deficient number, since it is larger than the sum of its proper divisors (5920568083763).

65117555374861 is a wasteful number, since it uses less digits than its factorization.

65117555374861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65860211.

The product of its digits is 105840000, while the sum is 64.

The spelling of 65117555374861 in words is "sixty-five trillion, one hundred seventeen billion, five hundred fifty-five million, three hundred seventy-four thousand, eight hundred sixty-one".