538719433440 has 192 divisors, whose sum is σ = 1752596600832. Its totient is φ = 138953779200.

The previous prime is 538719433411. The next prime is 538719433501. The reversal of 538719433440 is 44334917835.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33367770 + ... + 33383910.

It is an arithmetic number, because the mean of its divisors is an integer number (9128107296).

Almost surely, 2^538719433440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 538719433440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (876298300416).

538719433440 is an abundant number, since it is smaller than the sum of its proper divisors (1213877167392).

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

538719433440 is a wasteful number, since it uses less digits than its factorization.

538719433440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18433 (or 18425 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 51.

The spelling of 538719433440 in words is "five hundred thirty-eight billion, seven hundred nineteen million, four hundred thirty-three thousand, four hundred forty".