8042788821 has 8 divisors (see below), whose sum is σ = 10985272704. Its totient is φ = 5231082080.

The previous prime is 8042788813. The next prime is 8042788823. The reversal of 8042788821 is 1288872408.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8042788821 - 2³ = 8042788813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8042788823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32694141 + ... + 32694386.

It is an arithmetic number, because the mean of its divisors is an integer number (1373159088).

Almost surely, 2^8042788821 is an apocalyptic number.

It is an amenable number.

8042788821 is a deficient number, since it is larger than the sum of its proper divisors (2942483883).

8042788821 is a wasteful number, since it uses less digits than its factorization.

8042788821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65388571.

The product of its (nonzero) digits is 458752, while the sum is 48.

The square root of 8042788821 is about 89681.5968914470. The cubic root of 8042788821 is about 2003.5593966731.

The spelling of 8042788821 in words is "eight billion, forty-two million, seven hundred eighty-eight thousand, eight hundred twenty-one".