16171700855409 has 24 divisors (see below), whose sum is σ = 25485606168672. Its totient is φ = 9799905424320.

The previous prime is 16171700855383. The next prime is 16171700855411. The reversal of 16171700855409 is 90455800717161.

16171700855409 is a `hidden beast` number, since 1 + 6 + 1 + 7 + 17 + 0 + 0 + 85 + 540 + 9 = 666.

It is not a de Polignac number, because 16171700855409 - 2¹³ = 16171700847217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16171700855489) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8511367 + ... + 10236540.

It is an arithmetic number, because the mean of its divisors is an integer number (1061900257028).

Almost surely, 2^{16171700855409} is an apocalyptic number.

It is an amenable number.

16171700855409 is a deficient number, since it is larger than the sum of its proper divisors (9313905313263).

16171700855409 is a wasteful number, since it uses less digits than its factorization.

16171700855409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18756637 (or 18756634 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 54.

The spelling of 16171700855409 in words is "sixteen trillion, one hundred seventy-one billion, seven hundred million, eight hundred fifty-five thousand, four hundred nine".