99712844821799 has 4 divisors (see below), whose sum is σ = 108777648896520. Its totient is φ = 90648040747080.

The previous prime is 99712844821789. The next prime is 99712844821841.

99712844821799 is nontrivially palindromic in base 10.

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 99712844821799 - 2⁴ = 99712844821783 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 (99712844821739) 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, 4532402037344 + ... + 4532402037365.

It is an arithmetic number, because the mean of its divisors is an integer number (27194412224130).

Almost surely, 2^{99712844821799} is an apocalyptic number.

99712844821799 is a deficient number, since it is larger than the sum of its proper divisors (9064804074721).

99712844821799 is a wasteful number, since it uses less digits than its factorization.

99712844821799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9064804074720.

The product of its digits is 1316818944, while the sum is 80.

The spelling of 99712844821799 in words is "ninety-nine trillion, seven hundred twelve billion, eight hundred forty-four million, eight hundred twenty-one thousand, seven hundred ninety-nine".