99840773571 has 16 divisors (see below), whose sum is σ = 165969078528. Its totient is φ = 51865336800.

The previous prime is 99840773569. The next prime is 99840773603. The reversal of 99840773571 is 17537704899.

It is not a de Polignac number, because 99840773571 - 2¹ = 99840773569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99840783571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216105340 + ... + 216105801.

It is an arithmetic number, because the mean of its divisors is an integer number (10373067408).

Almost surely, 2^99840773571 is an apocalyptic number.

99840773571 is a deficient number, since it is larger than the sum of its proper divisors (66128304957).

99840773571 is a wasteful number, since it uses less digits than its factorization.

99840773571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432211162.

The product of its (nonzero) digits is 13335840, while the sum is 60.

The spelling of 99840773571 in words is "ninety-nine billion, eight hundred forty million, seven hundred seventy-three thousand, five hundred seventy-one".