23635313240 has 128 divisors (see below), whose sum is σ = 66475468800. Its totient is φ = 7347540480.

The previous prime is 23635313239. The next prime is 23635313249. The reversal of 23635313240 is 4231353632.

It is a junction number, because it is equal to n+sod(n) for n = 23635313197 and 23635313206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23635313249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1188257 + ... + 1207983.

It is an arithmetic number, because the mean of its divisors is an integer number (519339600).

Almost surely, 2^23635313240 is an apocalyptic number.

23635313240 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 23635313240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33237734400).

23635313240 is an abundant number, since it is smaller than the sum of its proper divisors (42840155560).

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

23635313240 is a wasteful number, since it uses less digits than its factorization.

23635313240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20145 (or 20141 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 32.

Adding to 23635313240 its reverse (4231353632), we get a palindrome (27866666872).

The spelling of 23635313240 in words is "twenty-three billion, six hundred thirty-five million, three hundred thirteen thousand, two hundred forty".