66205760424 has 48 divisors (see below), whose sum is σ = 171418653120. Its totient is φ = 21307594560.

The previous prime is 66205760417. The next prime is 66205760497. The reversal of 66205760424 is 42406750266.

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, 1619872 + ... + 1660239.

It is an arithmetic number, because the mean of its divisors is an integer number (3571221940).

Almost surely, 2^66205760424 is an apocalyptic number.

It is an amenable number.

66205760424 is an abundant number, since it is smaller than the sum of its proper divisors (105212892696).

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

66205760424 is a wasteful number, since it uses less digits than its factorization.

66205760424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3280178 (or 3280145 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 42.

The spelling of 66205760424 in words is "sixty-six billion, two hundred five million, seven hundred sixty thousand, four hundred twenty-four".