538843107711646 has 16 divisors (see below), whose sum is σ = 814427973825120. Its totient is φ = 267368389722880.

The previous prime is 538843107711637. The next prime is 538843107711653. The reversal of 538843107711646 is 646117701348835.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317473570 + ... + 319166341.

It is an arithmetic number, because the mean of its divisors is an integer number (50901748364070).

Almost surely, 2^{538843107711646} is an apocalyptic number.

538843107711646 is a deficient number, since it is larger than the sum of its proper divisors (275584866113474).

538843107711646 is a wasteful number, since it uses less digits than its factorization.

538843107711646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636643139.

The product of its (nonzero) digits is 81285120, while the sum is 64.

The spelling of 538843107711646 in words is "five hundred thirty-eight trillion, eight hundred forty-three billion, one hundred seven million, seven hundred eleven thousand, six hundred forty-six".