18471040000 has 660 divisors, whose sum is σ = 58320831360. Its totient is φ = 5806080000.

The previous prime is 18471039991. The next prime is 18471040009. The reversal of 18471040000 is 4017481.

It is an interprime number because it is at equal distance from previous prime (18471039991) and next prime (18471040009).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18471040009) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 595839985 + ... + 595840015.

It is an arithmetic number, because the mean of its divisors is an integer number (88364896).

Almost surely, 2^18471040000 is an apocalyptic number.

18471040000 is a gapful number since it is divisible by the number (10) 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 18471040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29160415680).

18471040000 is an abundant number, since it is smaller than the sum of its proper divisors (39849791360).

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

18471040000 is an equidigital number, since it uses as much as digits as its factorization.

18471040000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

Adding to 18471040000 its reverse (4017481), we get a palindrome (18475057481).

The spelling of 18471040000 in words is "eighteen billion, four hundred seventy-one million, forty thousand".