23640454112 has 72 divisors (see below), whose sum is σ = 51751473480. Its totient is φ = 10542471680.

The previous prime is 23640454111. The next prime is 23640454139. The reversal of 23640454112 is 21145404632.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23640454111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 976814 + ... + 1000722.

It is an arithmetic number, because the mean of its divisors is an integer number (718770465).

Almost surely, 2^23640454112 is an apocalyptic number.

23640454112 is a gapful number since it is divisible by the number (22) 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 23640454112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25875736740).

23640454112 is an abundant number, since it is smaller than the sum of its proper divisors (28111019368).

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

23640454112 is a wasteful number, since it uses less digits than its factorization.

23640454112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24036 (or 23975 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 23640454112 its reverse (21145404632), we get a palindrome (44785858744).

The spelling of 23640454112 in words is "twenty-three billion, six hundred forty million, four hundred fifty-four thousand, one hundred twelve".