18020147493432 has 256 divisors, whose sum is σ = 53138416896000. Its totient is φ = 4984783276032.

The previous prime is 18020147493427. The next prime is 18020147493463. The reversal of 18020147493432 is 23439474102081.

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, 5063259669 + ... + 5063263227.

It is an arithmetic number, because the mean of its divisors is an integer number (207571941000).

Almost surely, 2^{18020147493432} is an apocalyptic number.

18020147493432 is a gapful number since it is divisible by the number (12) 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 18020147493432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26569208448000).

18020147493432 is an abundant number, since it is smaller than the sum of its proper divisors (35118269402568).

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

18020147493432 is a wasteful number, since it uses less digits than its factorization.

18020147493432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7398 (or 7394 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 48.

The spelling of 18020147493432 in words is "eighteen trillion, twenty billion, one hundred forty-seven million, four hundred ninety-three thousand, four hundred thirty-two".