538021071544 has 16 divisors (see below), whose sum is σ = 1100497646520. Its totient is φ = 244555032480.

The previous prime is 538021071529. The next prime is 538021071607. The reversal of 538021071544 is 445170120835.

It is a junction number, because it is equal to n+sod(n) for n = 538021071497 and 538021071506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3056937819 + ... + 3056937994.

Almost surely, 2^538021071544 is an apocalyptic number.

It is an amenable number.

538021071544 is an abundant number, since it is smaller than the sum of its proper divisors (562476574976).

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

538021071544 is a wasteful number, since it uses less digits than its factorization.

538021071544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6113875830 (or 6113875826 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The spelling of 538021071544 in words is "five hundred thirty-eight billion, twenty-one million, seventy-one thousand, five hundred forty-four".