99993091355 has 4 divisors (see below), whose sum is σ = 119991709632. Its totient is φ = 79994473080.

The previous prime is 99993091337. The next prime is 99993091361. The reversal of 99993091355 is 55319039999.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 99993091355 - 2¹⁰ = 99993090331 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9999309131 + ... + 9999309140.

It is an arithmetic number, because the mean of its divisors is an integer number (29997927408).

Almost surely, 2^99993091355 is an apocalyptic number.

99993091355 is a deficient number, since it is larger than the sum of its proper divisors (19998618277).

99993091355 is a wasteful number, since it uses less digits than its factorization.

99993091355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19998618276.

The product of its (nonzero) digits is 13286025, while the sum is 62.

The spelling of 99993091355 in words is "ninety-nine billion, nine hundred ninety-three million, ninety-one thousand, three hundred fifty-five".