5643091557 has 24 divisors (see below), whose sum is σ = 8456535360. Its totient is φ = 3760499520.

The previous prime is 5643091543. The next prime is 5643091567. The reversal of 5643091557 is 7551903465.

5643091557 is a `hidden beast` number, since 5 + 6 + 4 + 3 + 0 + 91 + 557 = 666.

It is not a de Polignac number, because 5643091557 - 2⁸ = 5643091301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5643091567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1144744 + ... + 1149662.

It is an arithmetic number, because the mean of its divisors is an integer number (352355640).

Almost surely, 2^5643091557 is an apocalyptic number.

It is an amenable number.

5643091557 is a deficient number, since it is larger than the sum of its proper divisors (2813443803).

5643091557 is an equidigital number, since it uses as much as digits as its factorization.

5643091557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9655 (or 9643 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 45.

The square root of 5643091557 is about 75120.5135565512. The cubic root of 5643091557 is about 1780.3512706780.

The spelling of 5643091557 in words is "five billion, six hundred forty-three million, ninety-one thousand, five hundred fifty-seven".