23551221120352 has 96 divisors (see below), whose sum is σ = 49938349910400. Its totient is φ = 10892387616768.

The previous prime is 23551221120347. The next prime is 23551221120353. The reversal of 23551221120352 is 25302112215532.

It is a super-2 number, since 2×23551221120352² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23551221120353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132756703 + ... + 132933985.

It is an arithmetic number, because the mean of its divisors is an integer number (520191144900).

Almost surely, 2^{23551221120352} 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 23551221120352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24969174955200).

23551221120352 is an abundant number, since it is smaller than the sum of its proper divisors (26387128790048).

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

23551221120352 is a wasteful number, since it uses less digits than its factorization.

23551221120352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181508 (or 181500 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 23551221120352 its reverse (25302112215532), we get a palindrome (48853333335884).

The spelling of 23551221120352 in words is "twenty-three trillion, five hundred fifty-one billion, two hundred twenty-one million, one hundred twenty thousand, three hundred fifty-two".