23121252553452 has 12 divisors (see below), whose sum is σ = 53949589291416. Its totient is φ = 7707084184480.

The previous prime is 23121252553447. The next prime is 23121252553481. The reversal of 23121252553452 is 25435525212132.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 963385523049 + ... + 963385523072.

It is an arithmetic number, because the mean of its divisors is an integer number (4495799107618).

Almost surely, 2^{23121252553452} is an apocalyptic number.

It is an amenable number.

23121252553452 is an abundant number, since it is smaller than the sum of its proper divisors (30828336737964).

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

23121252553452 is a wasteful number, since it uses less digits than its factorization.

23121252553452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926771046128 (or 1926771046126 counting only the distinct ones).

The product of its digits is 720000, while the sum is 42.

Adding to 23121252553452 its reverse (25435525212132), we get a palindrome (48556777765584).

The spelling of 23121252553452 in words is "twenty-three trillion, one hundred twenty-one billion, two hundred fifty-two million, five hundred fifty-three thousand, four hundred fifty-two".