7312799999 has 4 divisors (see below), whose sum is σ = 7316306064. Its totient is φ = 7309293936.

The previous prime is 7312799981. The next prime is 7312800043. The reversal of 7312799999 is 9999972137.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9999972137 = 19 ⋅526314323.

It is a cyclic number.

It is not a de Polignac number, because 7312799999 - 2²⁰ = 7311751423 is a prime.

It is a Duffinian number.

7312799999 is a modest number, since divided by 99999 gives 73127 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7312799939) 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, 1749902 + ... + 1754075.

It is an arithmetic number, because the mean of its divisors is an integer number (1829076516).

Almost surely, 2^7312799999 is an apocalyptic number.

7312799999 is a deficient number, since it is larger than the sum of its proper divisors (3506065).

7312799999 is a wasteful number, since it uses less digits than its factorization.

7312799999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3506064.

The product of its digits is 17360406, while the sum is 65.

The square root of 7312799999 is about 85514.9109746365. The cubic root of 7312799999 is about 1941.0105620838.

The spelling of 7312799999 in words is "seven billion, three hundred twelve million, seven hundred ninety-nine thousand, nine hundred ninety-nine".