6657538895 has 32 divisors (see below), whose sum is σ = 9673769088. Its totient is φ = 4293808128.

The previous prime is 6657538891. The next prime is 6657538897. The reversal of 6657538895 is 5988357566.

6657538895 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 6657538895 - 2² = 6657538891 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6657538891) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1278437 + ... + 1283633.

It is an arithmetic number, because the mean of its divisors is an integer number (302305284).

Almost surely, 2^6657538895 is an apocalyptic number.

6657538895 is a deficient number, since it is larger than the sum of its proper divisors (3016230193).

6657538895 is a wasteful number, since it uses less digits than its factorization.

6657538895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7379.

The product of its digits is 54432000, while the sum is 62.

The square root of 6657538895 is about 81593.7429892758. The cubic root of 6657538895 is about 1881.2127092456.

The spelling of 6657538895 in words is "six billion, six hundred fifty-seven million, five hundred thirty-eight thousand, eight hundred ninety-five".