5643742427 has 2 divisors, whose sum is σ = 5643742428. Its totient is φ = 5643742426.

The previous prime is 5643742361. The next prime is 5643742441. The reversal of 5643742427 is 7242473465.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5643742427 - 2¹⁴ = 5643726043 is a prime.

It is not a weakly prime, because it can be changed into another prime (5643741427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2821871213 + 2821871214.

It is an arithmetic number, because the mean of its divisors is an integer number (2821871214).

Almost surely, 2^5643742427 is an apocalyptic number.

5643742427 is a deficient number, since it is larger than the sum of its proper divisors (1).

5643742427 is an equidigital number, since it uses as much as digits as its factorization.

5643742427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1128960, while the sum is 44.

The square root of 5643742427 is about 75124.8456038347. The cubic root of 5643742427 is about 1780.4197161788.

The spelling of 5643742427 in words is "five billion, six hundred forty-three million, seven hundred forty-two thousand, four hundred twenty-seven".