23171285909016 has 160 divisors (see below), whose sum is σ = 74193388093440. Its totient is φ = 6618515044032.

The previous prime is 23171285908997. The next prime is 23171285909021. The reversal of 23171285909016 is 61090958217132.

It is a happy number.

23171285909016 is a `hidden beast` number, since 2 + 3 + 17 + 1 + 28 + 590 + 9 + 0 + 16 = 666.

It is a super-3 number, since 3×23171285909016³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 15539635 + ... + 16965341.

It is an arithmetic number, because the mean of its divisors is an integer number (463708675584).

Almost surely, 2^{23171285909016} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23171285909016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37096694046720).

23171285909016 is an abundant number, since it is smaller than the sum of its proper divisors (51022102184424).

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

23171285909016 is a wasteful number, since it uses less digits than its factorization.

23171285909016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429315 (or 1429302 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 54.

The spelling of 23171285909016 in words is "twenty-three trillion, one hundred seventy-one billion, two hundred eighty-five million, nine hundred nine thousand, sixteen".