23547131500 has 96 divisors (see below), whose sum is σ = 52540488000. Its totient is φ = 9215897600.

The previous prime is 23547131449. The next prime is 23547131507. The reversal of 23547131500 is 513174532.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (23547131507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11897511 + ... + 11899489.

It is an arithmetic number, because the mean of its divisors is an integer number (547296750).

Almost surely, 2^23547131500 is an apocalyptic number.

23547131500 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 23547131500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26270244000).

23547131500 is an abundant number, since it is smaller than the sum of its proper divisors (28993356500).

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

23547131500 is a wasteful number, since it uses less digits than its factorization.

23547131500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500 (or 2488 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 31.

The spelling of 23547131500 in words is "twenty-three billion, five hundred forty-seven million, one hundred thirty-one thousand, five hundred".