23166453420 has 144 divisors (see below), whose sum is σ = 76704814368. Its totient is φ = 5612820480.

The previous prime is 23166453391. The next prime is 23166453463. The reversal of 23166453420 is 2435466132.

23166453420 is a `hidden beast` number, since 2 + 3 + 1 + 6 + 645 + 3 + 4 + 2 + 0 = 666.

It is a super-2 number, since 2×23166453420² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6367842 + ... + 6371478.

It is an arithmetic number, because the mean of its divisors is an integer number (532672322).

Almost surely, 2^23166453420 is an apocalyptic number.

23166453420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23166453420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38352407184).

23166453420 is an abundant number, since it is smaller than the sum of its proper divisors (53538360948).

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

23166453420 is a wasteful number, since it uses less digits than its factorization.

23166453420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6880 (or 6875 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The spelling of 23166453420 in words is "twenty-three billion, one hundred sixty-six million, four hundred fifty-three thousand, four hundred twenty".