999811752005 has 8 divisors (see below), whose sum is σ = 1308844475424. Its totient is φ = 727135819600.

The previous prime is 999811751993. The next prime is 999811752007. The reversal of 999811752005 is 500257118999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 999811752005 - 2⁴ = 999811751989 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 (999811752007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9089197691 + ... + 9089197800.

It is an arithmetic number, because the mean of its divisors is an integer number (163605559428).

Almost surely, 2^999811752005 is an apocalyptic number.

It is an amenable number.

999811752005 is a deficient number, since it is larger than the sum of its proper divisors (309032723419).

999811752005 is a wasteful number, since it uses less digits than its factorization.

999811752005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18178395507.

The product of its (nonzero) digits is 2041200, while the sum is 56.

The spelling of 999811752005 in words is "nine hundred ninety-nine billion, eight hundred eleven million, seven hundred fifty-two thousand, five".