23109207552 has 160 divisors (see below), whose sum is σ = 69697726560. Its totient is φ = 7557488640.

The previous prime is 23109207523. The next prime is 23109207553. The reversal of 23109207552 is 25570290132.

23109207552 is a `hidden beast` number, since 2 + 3 + 10 + 92 + 0 + 7 + 552 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23109207553) 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, 716902 + ... + 748442.

It is an arithmetic number, because the mean of its divisors is an integer number (435610791).

Almost surely, 2^23109207552 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 23109207552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34848863280).

23109207552 is an abundant number, since it is smaller than the sum of its proper divisors (46588519008).

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

23109207552 is an equidigital number, since it uses as much as digits as its factorization.

23109207552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31621 (or 31599 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

Adding to 23109207552 its reverse (25570290132), we get a palindrome (48679497684).

The spelling of 23109207552 in words is "twenty-three billion, one hundred nine million, two hundred seven thousand, five hundred fifty-two".