99994143599 has 32 divisors (see below), whose sum is σ = 121516462080. Its totient is φ = 80324794368.

The previous prime is 99994143583. The next prime is 99994143653. The reversal of 99994143599 is 99534149999.

It is not a de Polignac number, because 99994143599 - 2⁴ = 99994143583 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 (99994143539) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53215742 + ... + 53217620.

It is an arithmetic number, because the mean of its divisors is an integer number (3797389440).

Almost surely, 2^99994143599 is an apocalyptic number.

99994143599 is a deficient number, since it is larger than the sum of its proper divisors (21522318481).

99994143599 is a wasteful number, since it uses less digits than its factorization.

99994143599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3567.

The product of its digits is 127545840, while the sum is 71.

The spelling of 99994143599 in words is "ninety-nine billion, nine hundred ninety-four million, one hundred forty-three thousand, five hundred ninety-nine".