65320893966861 has 64 divisors (see below), whose sum is σ = 104502101114880. Its totient is φ = 40087073016000.

The previous prime is 65320893966859. The next prime is 65320893966869. The reversal of 65320893966861 is 16866939802356.

65320893966861 is a `hidden beast` number, since 6 + 532 + 0 + 8 + 9 + 3 + 9 + 6 + 6 + 86 + 1 = 666.

It is not a de Polignac number, because 65320893966861 - 2¹ = 65320893966859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65320893966861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65320893966869) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 358596196 + ... + 358778306.

It is an arithmetic number, because the mean of its divisors is an integer number (1632845329920).

Almost surely, 2^{65320893966861} is an apocalyptic number.

It is an amenable number.

65320893966861 is a deficient number, since it is larger than the sum of its proper divisors (39181207148019).

65320893966861 is a wasteful number, since it uses less digits than its factorization.

65320893966861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184935 (or 184929 counting only the distinct ones).

The product of its (nonzero) digits is 604661760, while the sum is 72.

The spelling of 65320893966861 in words is "sixty-five trillion, three hundred twenty billion, eight hundred ninety-three million, nine hundred sixty-six thousand, eight hundred sixty-one".