538236624785 has 8 divisors (see below), whose sum is σ = 663340272936. Its totient is φ = 418951751040.

The previous prime is 538236624707. The next prime is 538236624811. The reversal of 538236624785 is 587426632835.

It can be written as a sum of positive squares in 4 ways, for example, as 296685017344 + 241551607441 = 544688^2 + 491479^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-538236624785 is a prime.

It is a Duffinian number.

It is a Curzon 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, 1454693396 + ... + 1454693765.

It is an arithmetic number, because the mean of its divisors is an integer number (82917534117).

Almost surely, 2^538236624785 is an apocalyptic number.

It is an amenable number.

538236624785 is a deficient number, since it is larger than the sum of its proper divisors (125103648151).

538236624785 is a wasteful number, since it uses less digits than its factorization.

538236624785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2909387203.

The product of its digits is 58060800, while the sum is 59.

The spelling of 538236624785 in words is "five hundred thirty-eight billion, two hundred thirty-six million, six hundred twenty-four thousand, seven hundred eighty-five".