99391929718 has 16 divisors (see below), whose sum is σ = 152565811200. Its totient is φ = 48536822376.

The previous prime is 99391929713. The next prime is 99391929809. The reversal of 99391929718 is 81792919399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99391929713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1541083 + ... + 1604281.

It is an arithmetic number, because the mean of its divisors is an integer number (9535363200).

Almost surely, 2^99391929718 is an apocalyptic number.

99391929718 is a deficient number, since it is larger than the sum of its proper divisors (53173881482).

99391929718 is a wasteful number, since it uses less digits than its factorization.

99391929718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81531.

The product of its digits is 19840464, while the sum is 67.

The spelling of 99391929718 in words is "ninety-nine billion, three hundred ninety-one million, nine hundred twenty-nine thousand, seven hundred eighteen".