23155444452 has 48 divisors (see below), whose sum is σ = 62117637120. Its totient is φ = 6576221472.

The previous prime is 23155444447. The next prime is 23155444453. The reversal of 23155444452 is 25444455132.

It is a self number, because there is not a number n which added to its sum of digits gives 23155444452.

It is not an unprimeable number, because it can be changed into a prime (23155444453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 811302 + ... + 839357.

It is an arithmetic number, because the mean of its divisors is an integer number (1294117440).

Almost surely, 2^23155444452 is an apocalyptic number.

It is an amenable number.

23155444452 is an abundant number, since it is smaller than the sum of its proper divisors (38962192668).

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

23155444452 is a wasteful number, since it uses less digits than its factorization.

23155444452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1650840 (or 1650838 counting only the distinct ones).

The product of its digits is 384000, while the sum is 39.

Adding to 23155444452 its reverse (25444455132), we get a palindrome (48599899584).

The spelling of 23155444452 in words is "twenty-three billion, one hundred fifty-five million, four hundred forty-four thousand, four hundred fifty-two".