5636485681 has 4 divisors (see below), whose sum is σ = 5637809664. Its totient is φ = 5635161700.

The previous prime is 5636485649. The next prime is 5636485691. The reversal of 5636485681 is 1865846365.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5636485681 - 2⁵ = 5636485649 is a prime.

It is a super-2 number, since 2×5636485681² = 63539941664236067522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5636485691) 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, 655585 + ... + 664126.

It is an arithmetic number, because the mean of its divisors is an integer number (1409452416).

Almost surely, 2^5636485681 is an apocalyptic number.

It is an amenable number.

5636485681 is a deficient number, since it is larger than the sum of its proper divisors (1323983).

5636485681 is a wasteful number, since it uses less digits than its factorization.

5636485681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323982.

The product of its digits is 4147200, while the sum is 52.

The square root of 5636485681 is about 75076.5321588577. The cubic root of 5636485681 is about 1779.6562986811.

The spelling of 5636485681 in words is "five billion, six hundred thirty-six million, four hundred eighty-five thousand, six hundred eighty-one".