5636481457 has 8 divisors (see below), whose sum is σ = 5678632872. Its totient is φ = 5594467200.

The previous prime is 5636481449. The next prime is 5636481509. The reversal of 5636481457 is 7541846365.

It can be written as a sum of positive squares in 4 ways, for example, as 2204396401 + 3432085056 = 46951^2 + 58584^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 5636481457 - 2³ = 5636481449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5636481457.

It is not an unprimeable number, because it can be changed into a prime (5636481857) 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, 48957 + ... + 116917.

It is an arithmetic number, because the mean of its divisors is an integer number (709829109).

Almost surely, 2^5636481457 is an apocalyptic number.

It is an amenable number.

5636481457 is a deficient number, since it is larger than the sum of its proper divisors (42151415).

5636481457 is a wasteful number, since it uses less digits than its factorization.

5636481457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68579.

The product of its digits is 2419200, while the sum is 49.

The square root of 5636481457 is about 75076.5040275584. The cubic root of 5636481457 is about 1779.6558541210.

The spelling of 5636481457 in words is "five billion, six hundred thirty-six million, four hundred eighty-one thousand, four hundred fifty-seven".