66859069676 has 48 divisors (see below), whose sum is σ = 140878268160. Its totient is φ = 27122195520.

The previous prime is 66859069661. The next prime is 66859069709. The reversal of 66859069676 is 67696095866.

66859069676 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 564686 + ... + 672746.

It is an arithmetic number, because the mean of its divisors is an integer number (2934963920).

Almost surely, 2^66859069676 is an apocalyptic number.

It is an amenable number.

66859069676 is an abundant number, since it is smaller than the sum of its proper divisors (74019198484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66859069676 is a wasteful number, since it uses less digits than its factorization.

66859069676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109254 (or 109252 counting only the distinct ones).

The product of its (nonzero) digits is 176359680, while the sum is 68.

The spelling of 66859069676 in words is "sixty-six billion, eight hundred fifty-nine million, sixty-nine thousand, six hundred seventy-six".