66669385134 has 24 divisors (see below), whose sum is σ = 146562451560. Its totient is φ = 20202843760.

The previous prime is 66669385121. The next prime is 66669385169. The reversal of 66669385134 is 43158396666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45914829 + ... + 45916280.

It is an arithmetic number, because the mean of its divisors is an integer number (6106768815).

Almost surely, 2^66669385134 is an apocalyptic number.

66669385134 is an abundant number, since it is smaller than the sum of its proper divisors (79893066426).

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

66669385134 is a wasteful number, since it uses less digits than its factorization.

66669385134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91831136 (or 91831125 counting only the distinct ones).

The product of its digits is 16796160, while the sum is 57.

The spelling of 66669385134 in words is "sixty-six billion, six hundred sixty-nine million, three hundred eighty-five thousand, one hundred thirty-four".