538007309802721 has 8 divisors (see below), whose sum is σ = 586963137852000. Its totient is φ = 489059160522240.

The previous prime is 538007309802707. The next prime is 538007309802731. The reversal of 538007309802721 is 127208903700835.

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

It is not a de Polignac number, because 538007309802721 - 2¹⁹ = 538007309278433 is a prime.

It is a super-2 number, since 2×538007309802721² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (538007309802701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1919545696 + ... + 1919825953.

It is an arithmetic number, because the mean of its divisors is an integer number (73370392231500).

Almost surely, 2^{538007309802721} is an apocalyptic number.

It is an amenable number.

538007309802721 is a deficient number, since it is larger than the sum of its proper divisors (48955828049279).

538007309802721 is a wasteful number, since it uses less digits than its factorization.

538007309802721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3839384399.

The product of its (nonzero) digits is 5080320, while the sum is 55.

The spelling of 538007309802721 in words is "five hundred thirty-eight trillion, seven billion, three hundred nine million, eight hundred two thousand, seven hundred twenty-one".