66406480614 has 28 divisors (see below), whose sum is σ = 149346265236. Its totient is φ = 22135493052.

The previous prime is 66406480561. The next prime is 66406480649. The reversal of 66406480614 is 41608460466.

It is a self number, because there is not a number n which added to its sum of digits gives 66406480614.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 22771684 + ... + 22774599.

It is an arithmetic number, because the mean of its divisors is an integer number (5333795187).

Almost surely, 2^66406480614 is an apocalyptic number.

66406480614 is an abundant number, since it is smaller than the sum of its proper divisors (82939784622).

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

66406480614 is an equidigital number, since it uses as much as digits as its factorization.

66406480614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45546303 (or 45546288 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The spelling of 66406480614 in words is "sixty-six billion, four hundred six million, four hundred eighty thousand, six hundred fourteen".