999940001199993 has 128 divisors (see below), whose sum is σ = 1741596279521280. Its totient is φ = 555118966656000.

The previous prime is 999940001199989. The next prime is 999940001200003. The reversal of 999940001199993 is 399991100049999.

999940001199993 is a `hidden beast` number, since 9 + 9 + 9 + 9 + 400 + 0 + 119 + 9 + 9 + 93 = 666.

It is a Cunningham number, because it is equal to 99998³+1.

It is not a de Polignac number, because 999940001199993 - 2² = 999940001199989 is a prime.

It is a Smith number, since the sum of its digits (81) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (999940001199983) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4172538453 + ... + 4172778093.

It is an arithmetic number, because the mean of its divisors is an integer number (13606220933760).

Almost surely, 2^{999940001199993} is an apocalyptic number.

It is an amenable number.

999940001199993 is a deficient number, since it is larger than the sum of its proper divisors (741656278321287).

999940001199993 is a wasteful number, since it uses less digits than its factorization.

999940001199993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241956 (or 241950 counting only the distinct ones).

The product of its (nonzero) digits is 516560652, while the sum is 81.

The spelling of 999940001199993 in words is "nine hundred ninety-nine trillion, nine hundred forty billion, one million, one hundred ninety-nine thousand, nine hundred ninety-three".