666042202504 has 32 divisors (see below), whose sum is σ = 1436812056000. Its totient is φ = 283530905280.

The previous prime is 666042202499. The next prime is 666042202589. The reversal of 666042202504 is 405202240666.

It is a super-2 number, since 2×666042202504² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39903102 + ... + 39919789.

It is an arithmetic number, because the mean of its divisors is an integer number (44900376750).

Almost surely, 2^666042202504 is an apocalyptic number.

It is an amenable number.

666042202504 is an abundant number, since it is smaller than the sum of its proper divisors (770769853496).

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

666042202504 is a wasteful number, since it uses less digits than its factorization.

666042202504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79823053 (or 79823049 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

The spelling of 666042202504 in words is "six hundred sixty-six billion, forty-two million, two hundred two thousand, five hundred four".