66647314206 has 48 divisors (see below), whose sum is σ = 157548343680. Its totient is φ = 20193806160.

The previous prime is 66647314109. The next prime is 66647314213. The reversal of 66647314206 is 60241374666.

It is a happy 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, 2509111 + ... + 2535533.

It is an arithmetic number, because the mean of its divisors is an integer number (3282257160).

Almost surely, 2^66647314206 is an apocalyptic number.

66647314206 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

66647314206 is an abundant number, since it is smaller than the sum of its proper divisors (90901029474).

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

66647314206 is a wasteful number, since it uses less digits than its factorization.

66647314206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39181 (or 39178 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 45.

The spelling of 66647314206 in words is "sixty-six billion, six hundred forty-seven million, three hundred fourteen thousand, two hundred six".