7996993663 has 4 divisors (see below), whose sum is σ = 7997181760. Its totient is φ = 7996805568.

The previous prime is 7996993661. The next prime is 7996993691. The reversal of 7996993663 is 3663996997.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3663996997 = 233 ⋅15725309.

It is a cyclic number.

It is not a de Polignac number, because 7996993663 - 2¹ = 7996993661 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 (7996993661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3343 + ... + 126511.

It is an arithmetic number, because the mean of its divisors is an integer number (1999295440).

Almost surely, 2^7996993663 is an apocalyptic number.

7996993663 is a deficient number, since it is larger than the sum of its proper divisors (188097).

7996993663 is a wasteful number, since it uses less digits than its factorization.

7996993663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188096.

The product of its digits is 89282088, while the sum is 67.

The square root of 7996993663 is about 89425.9115860722. The cubic root of 7996993663 is about 1999.7494405280.

The spelling of 7996993663 in words is "seven billion, nine hundred ninety-six million, nine hundred ninety-three thousand, six hundred sixty-three".