8081152821 has 24 divisors (see below), whose sum is σ = 13501051200. Its totient is φ = 4562162496.

The previous prime is 8081152817. The next prime is 8081152823. The reversal of 8081152821 is 1282511808.

It is not a de Polignac number, because 8081152821 - 2² = 8081152817 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8081152823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 767496 + ... + 777953.

It is an arithmetic number, because the mean of its divisors is an integer number (562543800).

Almost surely, 2^8081152821 is an apocalyptic number.

It is an amenable number.

8081152821 is a deficient number, since it is larger than the sum of its proper divisors (5419898379).

8081152821 is a wasteful number, since it uses less digits than its factorization.

8081152821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545545 (or 1545542 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 36.

The square root of 8081152821 is about 89895.2324709158. The cubic root of 8081152821 is about 2006.7399957965.

The spelling of 8081152821 in words is "eight billion, eighty-one million, one hundred fifty-two thousand, eight hundred twenty-one".