666056146506 has 32 divisors (see below), whose sum is σ = 1383822631296. Its totient is φ = 213552864000.

The previous prime is 666056146471. The next prime is 666056146507. The reversal of 666056146506 is 605641650666.

It is not an unprimeable number, because it can be changed into a prime (666056146507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19049755 + ... + 19084686.

It is an arithmetic number, because the mean of its divisors is an integer number (43244457228).

Almost surely, 2^666056146506 is an apocalyptic number.

666056146506 is an abundant number, since it is smaller than the sum of its proper divisors (717766484790).

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

666056146506 is a wasteful number, since it uses less digits than its factorization.

666056146506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38134558.

The product of its (nonzero) digits is 4665600, while the sum is 51.

The spelling of 666056146506 in words is "six hundred sixty-six billion, fifty-six million, one hundred forty-six thousand, five hundred six".