23111949018240 has 192 divisors, whose sum is σ = 79817198385600. Its totient is φ = 6162510735360.

The previous prime is 23111949018203. The next prime is 23111949018247. The reversal of 23111949018240 is 4281094911132.

23111949018240 is a `hidden beast` number, since 2 + 3 + 1 + 119 + 490 + 1 + 8 + 2 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (23111949018247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53462155 + ... + 53892725.

It is an arithmetic number, because the mean of its divisors is an integer number (415714574925).

Almost surely, 2^{23111949018240} is an apocalyptic number.

23111949018240 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 23111949018240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39908599192800).

23111949018240 is an abundant number, since it is smaller than the sum of its proper divisors (56705249367360).

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

23111949018240 is a wasteful number, since it uses less digits than its factorization.

23111949018240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439915 (or 439900 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 23111949018240 in words is "twenty-three trillion, one hundred eleven billion, nine hundred forty-nine million, eighteen thousand, two hundred forty".