5663544457 has 4 divisors (see below), whose sum is σ = 5670545940. Its totient is φ = 5656542976.

The previous prime is 5663544433. The next prime is 5663544499. The reversal of 5663544457 is 7544453665.

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 4593992841 + 1069551616 = 67779^2 + 32704^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5663544457 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 5663544457.

It is not an unprimeable number, because it can be changed into a prime (5663544857) 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, 3499528 + ... + 3501145.

It is an arithmetic number, because the mean of its divisors is an integer number (1417636485).

Almost surely, 2^5663544457 is an apocalyptic number.

It is an amenable number.

5663544457 is a deficient number, since it is larger than the sum of its proper divisors (7001483).

5663544457 is an equidigital number, since it uses as much as digits as its factorization.

5663544457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7001482.

The product of its digits is 6048000, while the sum is 49.

The square root of 5663544457 is about 75256.5243483912. The cubic root of 5663544457 is about 1782.4995873207.

The spelling of 5663544457 in words is "five billion, six hundred sixty-three million, five hundred forty-four thousand, four hundred fifty-seven".