999423737803 has 4 divisors (see below), whose sum is σ = 1031663213248. Its totient is φ = 967184262360.

The previous prime is 999423737797. The next prime is 999423737843. The reversal of 999423737803 is 308737324999.

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 999423737803 - 2¹³ = 999423729611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999423737843) 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, 16119737676 + ... + 16119737737.

It is an arithmetic number, because the mean of its divisors is an integer number (257915803312).

Almost surely, 2^999423737803 is an apocalyptic number.

999423737803 is a deficient number, since it is larger than the sum of its proper divisors (32239475445).

999423737803 is a wasteful number, since it uses less digits than its factorization.

999423737803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32239475444.

The product of its (nonzero) digits is 61725888, while the sum is 64.

The spelling of 999423737803 in words is "nine hundred ninety-nine billion, four hundred twenty-three million, seven hundred thirty-seven thousand, eight hundred three".