65820671793216 has 84 divisors (see below), whose sum is σ = 195650592616752. Its totient is φ = 21940223925888.

The previous prime is 65820671793209. The next prime is 65820671793257. The reversal of 65820671793216 is 61239717602856.

65820671793216 is a `hidden beast` number, since 6 + 5 + 82 + 0 + 67 + 179 + 321 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2116132590 + ... + 2116163693.

It is an arithmetic number, because the mean of its divisors is an integer number (2329173721628).

Almost surely, 2^{65820671793216} is an apocalyptic number.

It is an amenable number.

65820671793216 is an abundant number, since it is smaller than the sum of its proper divisors (129829920823536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65820671793216 is an equidigital number, since it uses as much as digits as its factorization.

65820671793216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4232296310 (or 4232296288 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 63.

The spelling of 65820671793216 in words is "sixty-five trillion, eight hundred twenty billion, six hundred seventy-one million, seven hundred ninety-three thousand, two hundred sixteen".