666056146504 has 64 divisors (see below), whose sum is σ = 1433635862400. Its totient is φ = 284179981824.

The previous prime is 666056146471. The next prime is 666056146507. The reversal of 666056146504 is 405641650666.

It is a happy number.

It is a super-2 number, since 2×666056146504² (a number of 24 digits) contains 22 as substring.

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

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17556484 + ... + 17594380.

It is an arithmetic number, because the mean of its divisors is an integer number (22400560350).

Almost surely, 2^666056146504 is an apocalyptic number.

It is an amenable number.

666056146504 is an abundant number, since it is smaller than the sum of its proper divisors (767579715896).

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

666056146504 is a wasteful number, since it uses less digits than its factorization.

666056146504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39302 (or 39298 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 49.

The spelling of 666056146504 in words is "six hundred sixty-six billion, fifty-six million, one hundred forty-six thousand, five hundred four".