99345427172 has 6 divisors (see below), whose sum is σ = 173854497558. Its totient is φ = 49672713584.

The previous prime is 99345427163. The next prime is 99345427189. The reversal of 99345427172 is 27172454399.

It can be written as a sum of positive squares in only one way, i.e., 88361129536 + 10984297636 = 297256^2 + 104806^2 .

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 as a sum of consecutive naturals, namely, 12418178393 + ... + 12418178400.

It is an arithmetic number, because the mean of its divisors is an integer number (28975749593).

Almost surely, 2^99345427172 is an apocalyptic number.

It is an amenable number.

99345427172 is a deficient number, since it is larger than the sum of its proper divisors (74509070386).

99345427172 is a wasteful number, since it uses less digits than its factorization.

99345427172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24836356797 (or 24836356795 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 53.

The spelling of 99345427172 in words is "ninety-nine billion, three hundred forty-five million, four hundred twenty-seven thousand, one hundred seventy-two".