7993636363998 has 64 divisors (see below), whose sum is σ = 18322035001920. Its totient is φ = 2581403821056.

The previous prime is 7993636363991. The next prime is 7993636364029. The reversal of 7993636363998 is 8993636363997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7993636363991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8119915 + ... + 9050982.

It is an arithmetic number, because the mean of its divisors is an integer number (286281796905).

Almost surely, 2^{7993636363998} is an apocalyptic number.

7993636363998 is an abundant number, since it is smaller than the sum of its proper divisors (10328398637922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7993636363998 is a wasteful number, since it uses less digits than its factorization.

7993636363998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17171178 (or 17171172 counting only the distinct ones).

The product of its digits is 6428310336, while the sum is 81.

Subtracting 7993636363998 from its reverse (8993636363997), we obtain a palindrome (999999999999).

The spelling of 7993636363998 in words is "seven trillion, nine hundred ninety-three billion, six hundred thirty-six million, three hundred sixty-three thousand, nine hundred ninety-eight".