5556888643 has 2 divisors, whose sum is σ = 5556888644. Its totient is φ = 5556888642.

The previous prime is 5556888611. The next prime is 5556888661. The reversal of 5556888643 is 3468886555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5556888643 - 2⁵ = 5556888611 is a prime.

It is a super-2 number, since 2×5556888643² = 61758022781404762898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5556880643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2778444321 + 2778444322.

It is an arithmetic number, because the mean of its divisors is an integer number (2778444322).

Almost surely, 2^5556888643 is an apocalyptic number.

5556888643 is a deficient number, since it is larger than the sum of its proper divisors (1).

5556888643 is an equidigital number, since it uses as much as digits as its factorization.

5556888643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648000, while the sum is 58.

The square root of 5556888643 is about 74544.5413360361. The cubic root of 5556888643 is about 1771.2392656546.

The spelling of 5556888643 in words is "five billion, five hundred fifty-six million, eight hundred eighty-eight thousand, six hundred forty-three".