23305505120 has 96 divisors (see below), whose sum is σ = 56426243328. Its totient is φ = 9093477888.

The previous prime is 23305505107. The next prime is 23305505137. The reversal of 23305505120 is 2150550332.

It is a self number, because there is not a number n which added to its sum of digits gives 23305505120.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1093607 + ... + 1114713.

It is an arithmetic number, because the mean of its divisors is an integer number (587773368).

Almost surely, 2^23305505120 is an apocalyptic number.

23305505120 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 23305505120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28213121664).

23305505120 is an abundant number, since it is smaller than the sum of its proper divisors (33120738208).

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

23305505120 is a wasteful number, since it uses less digits than its factorization.

23305505120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21292 (or 21284 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 26.

The spelling of 23305505120 in words is "twenty-three billion, three hundred five million, five hundred five thousand, one hundred twenty".