99170870805 has 16 divisors (see below), whose sum is σ = 176303770560. Its totient is φ = 52891131024.

The previous prime is 99170870801. The next prime is 99170870831. The reversal of 99170870805 is 50807807199.

It is not a de Polignac number, because 99170870805 - 2² = 99170870801 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99170870801) 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, 367299387 + ... + 367299656.

It is an arithmetic number, because the mean of its divisors is an integer number (11018985660).

Almost surely, 2^99170870805 is an apocalyptic number.

It is an amenable number.

99170870805 is a deficient number, since it is larger than the sum of its proper divisors (77132899755).

99170870805 is a wasteful number, since it uses less digits than its factorization.

99170870805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734599057 (or 734599051 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 54.

The spelling of 99170870805 in words is "ninety-nine billion, one hundred seventy million, eight hundred seventy thousand, eight hundred five".