23641350018 has 96 divisors (see below), whose sum is σ = 56177999808. Its totient is φ = 6588362880.

The previous prime is 23641350017. The next prime is 23641350023. The reversal of 23641350018 is 81005314632.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23641350017) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2609805 + ... + 2618847.

It is an arithmetic number, because the mean of its divisors is an integer number (585187498).

Almost surely, 2^23641350018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23641350018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28088999904).

23641350018 is an abundant number, since it is smaller than the sum of its proper divisors (32536649790).

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

23641350018 is a wasteful number, since it uses less digits than its factorization.

23641350018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9360 (or 9349 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 23641350018 in words is "twenty-three billion, six hundred forty-one million, three hundred fifty thousand, eighteen".