6657558823 has 2 divisors, whose sum is σ = 6657558824. Its totient is φ = 6657558822.

The previous prime is 6657558799. The next prime is 6657558857. The reversal of 6657558823 is 3288557566.

6657558823 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 a de Polignac number, because none of the positive numbers 2^k-6657558823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6657555823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3328779411 + 3328779412.

It is an arithmetic number, because the mean of its divisors is an integer number (3328779412).

Almost surely, 2^6657558823 is an apocalyptic number.

6657558823 is a deficient number, since it is larger than the sum of its proper divisors (1).

6657558823 is an equidigital number, since it uses as much as digits as its factorization.

6657558823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096000, while the sum is 55.

The square root of 6657558823 is about 81593.8651063914. The cubic root of 6657558823 is about 1881.2145862540.

The spelling of 6657558823 in words is "six billion, six hundred fifty-seven million, five hundred fifty-eight thousand, eight hundred twenty-three".