90171668706 has 16 divisors (see below), whose sum is σ = 206106671424. Its totient is φ = 25763333904.

The previous prime is 90171668663. The next prime is 90171668707. The reversal of 90171668706 is 60786617109.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90171668707) 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, 1073472205 + ... + 1073472288.

It is an arithmetic number, because the mean of its divisors is an integer number (12881666964).

Almost surely, 2^90171668706 is an apocalyptic number.

90171668706 is an abundant number, since it is smaller than the sum of its proper divisors (115935002718).

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

90171668706 is a wasteful number, since it uses less digits than its factorization.

90171668706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2146944505.

The product of its (nonzero) digits is 762048, while the sum is 51.

The spelling of 90171668706 in words is "ninety billion, one hundred seventy-one million, six hundred sixty-eight thousand, seven hundred six".