538129595439 has 16 divisors (see below), whose sum is σ = 797541648640. Its totient is φ = 358612385400.

The previous prime is 538129595369. The next prime is 538129595447. The reversal of 538129595439 is 934595921835.

538129595439 is a `hidden beast` number, since 5 + 3 + 8 + 1 + 2 + 9 + 595 + 4 + 39 = 666.

It is not a de Polignac number, because 538129595439 - 2¹² = 538129591343 is a prime.

It is a super-2 number, since 2×538129595439² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538129595489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3837577 + ... + 3975330.

It is an arithmetic number, because the mean of its divisors is an integer number (49846353040).

Almost surely, 2^538129595439 is an apocalyptic number.

538129595439 is a deficient number, since it is larger than the sum of its proper divisors (259412053201).

538129595439 is a wasteful number, since it uses less digits than its factorization.

538129595439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7815467 (or 7815461 counting only the distinct ones).

The product of its digits is 52488000, while the sum is 63.

The spelling of 538129595439 in words is "five hundred thirty-eight billion, one hundred twenty-nine million, five hundred ninety-five thousand, four hundred thirty-nine".