23159969856 has 189 divisors, whose sum is σ = 70708072071. Its totient is φ = 7246393344.

The previous prime is 23159969849. The next prime is 23159969869. The reversal of 23159969856 is 65896995132.

The square root of 23159969856 is 152184.

It is a perfect power (a square), and thus also a powerful number.

23159969856 is a `hidden beast` number, since 2 + 31 + 599 + 6 + 9 + 8 + 5 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2561979456 + 20597990400 = 50616^2 + 143520^2 .

It is a junction number, because it is equal to n+sod(n) for n = 23159969793 and 23159969802.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 62090886 + ... + 62091258.

Almost surely, 2^23159969856 is an apocalyptic number.

23159969856 is the 152184-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23159969856

23159969856 is an abundant number, since it is smaller than the sum of its proper divisors (47548102215).

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

23159969856 is an equidigital number, since it uses as much as digits as its factorization.

23159969856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798 (or 395 counting only the distinct ones).

The product of its digits is 31492800, while the sum is 63.

The spelling of 23159969856 in words is "twenty-three billion, one hundred fifty-nine million, nine hundred sixty-nine thousand, eight hundred fifty-six".