536983967521 has 4 divisors (see below), whose sum is σ = 545786983444. Its totient is φ = 528180951600.

The previous prime is 536983967497. The next prime is 536983967543. The reversal of 536983967521 is 125769389635.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 217238955921 + 319745011600 = 466089^2 + 565460^2 .

It is a cyclic number.

It is not a de Polignac number, because 536983967521 - 2²⁹ = 536447096609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (536983964521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4401507870 + ... + 4401507991.

It is an arithmetic number, because the mean of its divisors is an integer number (136446745861).

Almost surely, 2^536983967521 is an apocalyptic number.

It is an amenable number.

536983967521 is a deficient number, since it is larger than the sum of its proper divisors (8803015923).

536983967521 is an equidigital number, since it uses as much as digits as its factorization.

536983967521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8803015922.

The product of its digits is 73483200, while the sum is 64.

The spelling of 536983967521 in words is "five hundred thirty-six billion, nine hundred eighty-three million, nine hundred sixty-seven thousand, five hundred twenty-one".