9999999999994 has 16 divisors (see below), whose sum is σ = 15180497556840. Its totient is φ = 4940094044160.

The previous prime is 9999999999971. The next prime is 10000000000037. The reversal of 9999999999994 is 4999999999999.

It can be written as a sum of positive squares in 4 ways, for example, as 5925879781969 + 4074120218025 = 2434313^2 + 2018445^2 .

It is a super-9 number, since 9×9999999999994⁹ (a number of 118 digits) contains 999999999 as substring.

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64896927 + ... + 65050834.

Almost surely, 2^{9999999999994} is an apocalyptic number.

9999999999994 is a deficient number, since it is larger than the sum of its proper divisors (5180497556846).

9999999999994 is a wasteful number, since it uses less digits than its factorization.

9999999999994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129948225.

The product of its digits is 1129718145924, while the sum is 112.

The spelling of 9999999999994 in words is "nine trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-four".