65297797885 has 8 divisors (see below), whose sum is σ = 78570867456. Its totient is φ = 52095898320.

The previous prime is 65297797849. The next prime is 65297797969. The reversal of 65297797885 is 58879779256.

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

It is not a de Polignac number, because 65297797885 - 2⁹ = 65297797373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17790481 + ... + 17794150.

It is an arithmetic number, because the mean of its divisors is an integer number (9821358432).

Almost surely, 2^65297797885 is an apocalyptic number.

It is an amenable number.

65297797885 is a deficient number, since it is larger than the sum of its proper divisors (13273069571).

65297797885 is a wasteful number, since it uses less digits than its factorization.

65297797885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35585003.

The product of its digits is 533433600, while the sum is 73.

The spelling of 65297797885 in words is "sixty-five billion, two hundred ninety-seven million, seven hundred ninety-seven thousand, eight hundred eighty-five".