8040413663 has 4 divisors (see below), whose sum is σ = 8044378440. Its totient is φ = 8036448888.

The previous prime is 8040413659. The next prime is 8040413681. The reversal of 8040413663 is 3663140408.

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

It is a cyclic number.

It is not a de Polignac number, because 8040413663 - 2² = 8040413659 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 (8040413683) 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, 1979345 + ... + 1983402.

It is an arithmetic number, because the mean of its divisors is an integer number (2011094610).

Almost surely, 2^8040413663 is an apocalyptic number.

8040413663 is a deficient number, since it is larger than the sum of its proper divisors (3964777).

8040413663 is a wasteful number, since it uses less digits than its factorization.

8040413663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3964776.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 8040413663 is about 89668.3537431127. The cubic root of 8040413663 is about 2003.3621500563.

The spelling of 8040413663 in words is "eight billion, forty million, four hundred thirteen thousand, six hundred sixty-three".