171806230866 has 16 divisors (see below), whose sum is σ = 344469355488. Its totient is φ = 57125928000.

The previous prime is 171806230861. The next prime is 171806230919. The reversal of 171806230866 is 668032608171.

It is a super-2 number, since 2×171806230866² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (171806230861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35701300 + ... + 35706111.

It is an arithmetic number, because the mean of its divisors is an integer number (21529334718).

Almost surely, 2^171806230866 is an apocalyptic number.

171806230866 is an abundant number, since it is smaller than the sum of its proper divisors (172663124622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

171806230866 is a wasteful number, since it uses less digits than its factorization.

171806230866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71407817.

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 171806230866 in words is "one hundred seventy-one billion, eight hundred six million, two hundred thirty thousand, eight hundred sixty-six".