99993558642 has 16 divisors (see below), whose sum is σ = 200438560800. Its totient is φ = 33255945632.

The previous prime is 99993558631. The next prime is 99993558649. The reversal of 99993558642 is 24685539999.

It is not an unprimeable number, because it can be changed into a prime (99993558649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18807267 + ... + 18812582.

It is an arithmetic number, because the mean of its divisors is an integer number (12527410050).

Almost surely, 2^99993558642 is an apocalyptic number.

99993558642 is an abundant number, since it is smaller than the sum of its proper divisors (100445002158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99993558642 is a wasteful number, since it uses less digits than its factorization.

99993558642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37620297.

The product of its digits is 188956800, while the sum is 69.

The spelling of 99993558642 in words is "ninety-nine billion, nine hundred ninety-three million, five hundred fifty-eight thousand, six hundred forty-two".