18402060783456 has 576 divisors, whose sum is σ = 62085208872960. Its totient is φ = 5061103534080.

The previous prime is 18402060783437. The next prime is 18402060783481. The reversal of 18402060783456 is 65438706020481.

It is a happy number.

18402060783456 is a `hidden beast` number, since 1 + 8 + 4 + 0 + 20 + 607 + 8 + 3 + 4 + 5 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3847386441 + ... + 3847391223.

It is an arithmetic number, because the mean of its divisors is an integer number (107786820960).

Almost surely, 2^{18402060783456} is an apocalyptic number.

18402060783456 is a gapful number since it is divisible by the number (16) 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 18402060783456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31042604436480).

18402060783456 is an abundant number, since it is smaller than the sum of its proper divisors (43683148089504).

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

18402060783456 is a wasteful number, since it uses less digits than its factorization.

18402060783456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5459 (or 5448 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 54.

The spelling of 18402060783456 in words is "eighteen trillion, four hundred two billion, sixty million, seven hundred eighty-three thousand, four hundred fifty-six".