500601221415666 has 40 divisors (see below), whose sum is σ = 1281962916220800. Its totient is φ = 143028920404152.

The previous prime is 500601221415641. The next prime is 500601221415683. The reversal of 500601221415666 is 666514122106005.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 220723641466 + ... + 220723643733.

It is an arithmetic number, because the mean of its divisors is an integer number (32049072905520).

Almost surely, 2^{500601221415666} is an apocalyptic number.

500601221415666 is an abundant number, since it is smaller than the sum of its proper divisors (781361694805134).

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

500601221415666 is a wasteful number, since it uses less digits than its factorization.

500601221415666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441447285220 (or 441447285211 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 500601221415666 in words is "five hundred trillion, six hundred one billion, two hundred twenty-one million, four hundred fifteen thousand, six hundred sixty-six".