538933445820 has 432 divisors, whose sum is σ = 2097310086144. Its totient is φ = 109602028800.

The previous prime is 538933445801. The next prime is 538933445837. The reversal of 538933445820 is 28544339835.

538933445820 is a `hidden beast` number, since 5 + 38 + 93 + 3 + 445 + 82 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 7128015 + ... + 7203225.

Almost surely, 2^538933445820 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 538933445820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1048655043072).

538933445820 is an abundant number, since it is smaller than the sum of its proper divisors (1558376640324).

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

538933445820 is a wasteful number, since it uses less digits than its factorization.

538933445820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75302 (or 75286 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 54.

The spelling of 538933445820 in words is "five hundred thirty-eight billion, nine hundred thirty-three million, four hundred forty-five thousand, eight hundred twenty".