18435527040 has 512 divisors, whose sum is σ = 69515366400. Its totient is φ = 4068827136.

The previous prime is 18435527029. The next prime is 18435527053. The reversal of 18435527040 is 4072553481.

It is a self number, because there is not a number n which added to its sum of digits gives 18435527040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 53128147 + ... + 53128493.

It is an arithmetic number, because the mean of its divisors is an integer number (135772200).

Almost surely, 2^18435527040 is an apocalyptic number.

18435527040 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 18435527040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34757683200).

18435527040 is an abundant number, since it is smaller than the sum of its proper divisors (51079839360).

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

18435527040 is a wasteful number, since it uses less digits than its factorization.

18435527040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 39.

The spelling of 18435527040 in words is "eighteen billion, four hundred thirty-five million, five hundred twenty-seven thousand, forty".