6557743723 has 2 divisors, whose sum is σ = 6557743724. Its totient is φ = 6557743722.

The previous prime is 6557743721. The next prime is 6557743769. The reversal of 6557743723 is 3273477556.

6557743723 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6557743723 - 2¹ = 6557743721 is a prime.

Together with 6557743721, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6557743721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3278871861 + 3278871862.

It is an arithmetic number, because the mean of its divisors is an integer number (3278871862).

Almost surely, 2^6557743723 is an apocalyptic number.

6557743723 is a deficient number, since it is larger than the sum of its proper divisors (1).

6557743723 is an equidigital number, since it uses as much as digits as its factorization.

6557743723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3704400, while the sum is 49.

The square root of 6557743723 is about 80979.8970300654. The cubic root of 6557743723 is about 1871.7656808028.

The spelling of 6557743723 in words is "six billion, five hundred fifty-seven million, seven hundred forty-three thousand, seven hundred twenty-three".