499438529218666 has 16 divisors (see below), whose sum is σ = 751395715012800. Its totient is φ = 248973320272320.

The previous prime is 499438529218609. The next prime is 499438529218703. The reversal of 499438529218666 is 666812925834994.

It is a self number, because there is not a number n which added to its sum of digits gives 499438529218666.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26781381 + ... + 41426071.

It is an arithmetic number, because the mean of its divisors is an integer number (46962232188300).

Almost surely, 2^{499438529218666} is an apocalyptic number.

499438529218666 is a deficient number, since it is larger than the sum of its proper divisors (251957185794134).

499438529218666 is a wasteful number, since it uses less digits than its factorization.

499438529218666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14695629.

The product of its digits is 9674588160, while the sum is 82.

The spelling of 499438529218666 in words is "four hundred ninety-nine trillion, four hundred thirty-eight billion, five hundred twenty-nine million, two hundred eighteen thousand, six hundred sixty-six".