99010810091 has 8 divisors (see below), whose sum is σ = 101099739504. Its totient is φ = 96941681280.

The previous prime is 99010810039. The next prime is 99010810121. The reversal of 99010810091 is 19001801099.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99010810091 - 2¹⁸ = 99010547947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99010810001) 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, 4940045 + ... + 4960046.

It is an arithmetic number, because the mean of its divisors is an integer number (12637467438).

Almost surely, 2^99010810091 is an apocalyptic number.

99010810091 is a deficient number, since it is larger than the sum of its proper divisors (2088929413).

99010810091 is a wasteful number, since it uses less digits than its factorization.

99010810091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9900301.

The product of its (nonzero) digits is 5832, while the sum is 38.

The spelling of 99010810091 in words is "ninety-nine billion, ten million, eight hundred ten thousand, ninety-one".