536504432561 has 4 divisors (see below), whose sum is σ = 536614174500. Its totient is φ = 536394690624.

The previous prime is 536504432549. The next prime is 536504432683. The reversal of 536504432561 is 165234405635.

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 411015621025 + 125488811536 = 641105^2 + 354244^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-536504432561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (536504432521) 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, 54863636 + ... + 54873413.

It is an arithmetic number, because the mean of its divisors is an integer number (134153543625).

Almost surely, 2^536504432561 is an apocalyptic number.

It is an amenable number.

536504432561 is a deficient number, since it is larger than the sum of its proper divisors (109741939).

536504432561 is a wasteful number, since it uses less digits than its factorization.

536504432561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109741938.

The product of its (nonzero) digits is 1296000, while the sum is 44.

The spelling of 536504432561 in words is "five hundred thirty-six billion, five hundred four million, four hundred thirty-two thousand, five hundred sixty-one".