7991463536799 has 32 divisors (see below), whose sum is σ = 10870559631360. Its totient is φ = 5220271884672.

The previous prime is 7991463536729. The next prime is 7991463536803. The reversal of 7991463536799 is 9976353641997.

It is not a de Polignac number, because 7991463536799 - 2¹¹ = 7991463534751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7991463536729) 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, 735382764 + ... + 735393630.

It is an arithmetic number, because the mean of its divisors is an integer number (339704988480).

Almost surely, 2^{7991463536799} is an apocalyptic number.

7991463536799 is a deficient number, since it is larger than the sum of its proper divisors (2879096094561).

7991463536799 is a wasteful number, since it uses less digits than its factorization.

7991463536799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16559.

The product of its digits is 2083248720, while the sum is 78.

The spelling of 7991463536799 in words is "seven trillion, nine hundred ninety-one billion, four hundred sixty-three million, five hundred thirty-six thousand, seven hundred ninety-nine".