806215680001 has 4 divisors (see below), whose sum is σ = 828005293012. Its totient is φ = 784426066992.

The previous prime is 806215679977. The next prime is 806215680043. The reversal of 806215680001 is 100086512608.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 567950640625 + 238265039376 = 753625^2 + 488124^2 .

It is a cyclic number.

It is not a de Polignac number, because 806215680001 - 2⁷ = 806215679873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 21789612973 = 806215680001 / (8 + 0 + 6 + 2 + 1 + 5 + 6 + 8 + 0 + 0 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (806215681001) 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, 10894806450 + ... + 10894806523.

It is an arithmetic number, because the mean of its divisors is an integer number (207001323253).

Almost surely, 2^806215680001 is an apocalyptic number.

It is an amenable number.

806215680001 is a deficient number, since it is larger than the sum of its proper divisors (21789613011).

806215680001 is a wasteful number, since it uses less digits than its factorization.

806215680001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21789613010.

The product of its (nonzero) digits is 23040, while the sum is 37.

The spelling of 806215680001 in words is "eight hundred six billion, two hundred fifteen million, six hundred eighty thousand, one".