545999538240 has 1568 divisors, whose sum is σ = 2216356369920. Its totient is φ = 127167086592.

The previous prime is 545999538229. The next prime is 545999538299. The reversal of 545999538240 is 42835999545.

545999538240 is a `hidden beast` number, since 5 + 4 + 5 + 9 + 99 + 538 + 2 + 4 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 6911386521 + ... + 6911386599.

Almost surely, 2^545999538240 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 545999538240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1108178184960).

545999538240 is an abundant number, since it is smaller than the sum of its proper divisors (1670356831680).

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

545999538240 is a wasteful number, since it uses less digits than its factorization.

545999538240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 69984000, while the sum is 63.

The spelling of 545999538240 in words is "five hundred forty-five billion, nine hundred ninety-nine million, five hundred thirty-eight thousand, two hundred forty".