99190002171 has 16 divisors (see below), whose sum is σ = 142435874336. Its totient is φ = 61036056576.

The previous prime is 99190002157. The next prime is 99190002173. The reversal of 99190002171 is 17120009199.

It is not a de Polignac number, because 99190002171 - 2²⁵ = 99156447739 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99190002173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 600891 + ... + 747963.

It is an arithmetic number, because the mean of its divisors is an integer number (8902242146).

Almost surely, 2^99190002171 is an apocalyptic number.

99190002171 is a deficient number, since it is larger than the sum of its proper divisors (43245872165).

99190002171 is a wasteful number, since it uses less digits than its factorization.

99190002171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164382.

The product of its (nonzero) digits is 10206, while the sum is 39.

The spelling of 99190002171 in words is "ninety-nine billion, one hundred ninety million, two thousand, one hundred seventy-one".