99055785169 has 4 divisors (see below), whose sum is σ = 108060856560. Its totient is φ = 90050713780.

The previous prime is 99055785151. The next prime is 99055785193. The reversal of 99055785169 is 96158755099.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 99055785169 - 2⁵ = 99055785137 is a prime.

It is a super-2 number, since 2×99055785169² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99055785169.

It is not an unprimeable number, because it can be changed into a prime (99055785469) 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 3 ways as a sum of consecutive naturals, for example, 4502535679 + ... + 4502535700.

It is an arithmetic number, because the mean of its divisors is an integer number (27015214140).

Almost surely, 2^99055785169 is an apocalyptic number.

It is an amenable number.

99055785169 is a deficient number, since it is larger than the sum of its proper divisors (9005071391).

99055785169 is a wasteful number, since it uses less digits than its factorization.

99055785169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9005071390.

The product of its (nonzero) digits is 30618000, while the sum is 64.

The spelling of 99055785169 in words is "ninety-nine billion, fifty-five million, seven hundred eighty-five thousand, one hundred sixty-nine".