18835540366240 has 768 divisors, whose sum is σ = 52627492108800. Its totient is φ = 6329545457664.

The previous prime is 18835540366183. The next prime is 18835540366259. The reversal of 18835540366240 is 4266304553881.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 44953556751 + ... + 44953557169.

It is an arithmetic number, because the mean of its divisors is an integer number (68525380350).

Almost surely, 2^{18835540366240} is an apocalyptic number.

18835540366240 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 18835540366240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26313746054400).

18835540366240 is an abundant number, since it is smaller than the sum of its proper divisors (33791951742560).

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

18835540366240 is a wasteful number, since it uses less digits than its factorization.

18835540366240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634 (or 592 counting only the distinct ones).

The product of its (nonzero) digits is 16588800, while the sum is 55.

The spelling of 18835540366240 in words is "eighteen trillion, eight hundred thirty-five billion, five hundred forty million, three hundred sixty-six thousand, two hundred forty".