99774647799 has 4 divisors (see below), whose sum is σ = 133032863736. Its totient is φ = 66516431864.

The previous prime is 99774647773. The next prime is 99774647839.

99774647799 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 99774647799 - 2⁵ = 99774647767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99774643799) 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, 16629107964 + ... + 16629107969.

It is an arithmetic number, because the mean of its divisors is an integer number (33258215934).

Almost surely, 2^99774647799 is an apocalyptic number.

99774647799 is a deficient number, since it is larger than the sum of its proper divisors (33258215937).

99774647799 is a wasteful number, since it uses less digits than its factorization.

99774647799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33258215936.

The product of its digits is 1512284256, while the sum is 78.

The spelling of 99774647799 in words is "ninety-nine billion, seven hundred seventy-four million, six hundred forty-seven thousand, seven hundred ninety-nine".