8036506311821 has 16 divisors (see below), whose sum is σ = 8934804641280. Its totient is φ = 7178272436160.

The previous prime is 8036506311811. The next prime is 8036506311863. The reversal of 8036506311821 is 1281136056308.

It is a de Polignac number, because none of the positive numbers 2^k-8036506311821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8036506311811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2901011 + ... + 4948623.

It is an arithmetic number, because the mean of its divisors is an integer number (558425290080).

Almost surely, 2^{8036506311821} is an apocalyptic number.

It is an amenable number.

8036506311821 is a deficient number, since it is larger than the sum of its proper divisors (898298329459).

8036506311821 is a wasteful number, since it uses less digits than its factorization.

8036506311821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057396.

The product of its (nonzero) digits is 207360, while the sum is 44.

The spelling of 8036506311821 in words is "eight trillion, thirty-six billion, five hundred six million, three hundred eleven thousand, eight hundred twenty-one".