23261478912 has 360 divisors, whose sum is σ = 79678889136. Its totient is φ = 6624903168.

The previous prime is 23261478907. The next prime is 23261478949. The reversal of 23261478912 is 21987416232.

23261478912 is a `hidden beast` number, since 2 + 32 + 61 + 478 + 91 + 2 = 666.

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 74317668 + ... + 74317980.

Almost surely, 2^23261478912 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 23261478912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39839444568).

23261478912 is an abundant number, since it is smaller than the sum of its proper divisors (56417410224).

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

23261478912 is an frugal number, since it uses more digits than its factorization.

23261478912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366 (or 325 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The spelling of 23261478912 in words is "twenty-three billion, two hundred sixty-one million, four hundred seventy-eight thousand, nine hundred twelve".