66087025206 has 48 divisors (see below), whose sum is σ = 138709945584. Its totient is φ = 20988977152.

The previous prime is 66087025157. The next prime is 66087025211. The reversal of 66087025206 is 60252078066.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 775210 + ... + 856226.

It is an arithmetic number, because the mean of its divisors is an integer number (2889790533).

Almost surely, 2^66087025206 is an apocalyptic number.

66087025206 is an abundant number, since it is smaller than the sum of its proper divisors (72622920378).

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

66087025206 is a wasteful number, since it uses less digits than its factorization.

66087025206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81325 (or 81302 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 66087025206 in words is "sixty-six billion, eighty-seven million, twenty-five thousand, two hundred six".