999995999999 has 16 divisors (see below), whose sum is σ = 1060476449760. Its totient is φ = 940320576000.

The previous prime is 999995999993. The next prime is 999996000001. The reversal of 999995999999 is 999999599999.

It is a cyclic number.

It is not a de Polignac number, because 999995999999 - 2⁴ = 999995999983 is a prime.

It is a Duffinian number.

999995999999 is a modest number, since divided by 999999 gives 999995 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999995999993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1512659 + ... + 2070779.

It is an arithmetic number, because the mean of its divisors is an integer number (66279778110).

Almost surely, 2^999995999999 is an apocalyptic number.

999995999999 is a deficient number, since it is larger than the sum of its proper divisors (60480449761).

999995999999 is a wasteful number, since it uses less digits than its factorization.

999995999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558842.

The product of its digits is 156905298045, while the sum is 104.

The spelling of 999995999999 in words is "nine hundred ninety-nine billion, nine hundred ninety-five million, nine hundred ninety-nine thousand, nine hundred ninety-nine".