23365203521240 has 128 divisors (see below), whose sum is σ = 60522644482560. Its totient is φ = 7952345800704.

The previous prime is 23365203521173. The next prime is 23365203521267. The reversal of 23365203521240 is 4212530256332.

It is a super-2 number, since 2×23365203521240² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23365203521194 and 23365203521203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24773759 + ... + 25699601.

It is an arithmetic number, because the mean of its divisors is an integer number (472833160020).

Almost surely, 2^{23365203521240} is an apocalyptic number.

23365203521240 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 23365203521240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30261322241280).

23365203521240 is an abundant number, since it is smaller than the sum of its proper divisors (37157440961320).

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

23365203521240 is a wasteful number, since it uses less digits than its factorization.

23365203521240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926521 (or 926517 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 38.

Adding to 23365203521240 its reverse (4212530256332), we get a palindrome (27577733777572).

The spelling of 23365203521240 in words is "twenty-three trillion, three hundred sixty-five billion, two hundred three million, five hundred twenty-one thousand, two hundred forty".