4539598643538 has 80 divisors (see below), whose sum is σ = 11625949266624. Its totient is φ = 1296946326240.

The previous prime is 4539598643527. The next prime is 4539598643557. The reversal of 4539598643538 is 8353468959354.

4539598643538 is a `hidden beast` number, since 4 + 5 + 3 + 9 + 5 + 9 + 86 + 4 + 3 + 538 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 19145428 + ... + 19381088.

Almost surely, 2^{4539598643538} is an apocalyptic number.

4539598643538 is an abundant number, since it is smaller than the sum of its proper divisors (7086350623086).

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

4539598643538 is a wasteful number, since it uses less digits than its factorization.

4539598643538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252669 (or 252660 counting only the distinct ones).

The product of its digits is 1679616000, while the sum is 72.

The spelling of 4539598643538 in words is "four trillion, five hundred thirty-nine billion, five hundred ninety-eight million, six hundred forty-three thousand, five hundred thirty-eight".