501499666806 has 8 divisors (see below), whose sum is σ = 1002999333624. Its totient is φ = 167166555600.

The previous prime is 501499666699. The next prime is 501499666849. The reversal of 501499666806 is 608666994105.

It is a sphenic number, since it is the product of 3 distinct primes.

501499666806 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 501499666806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41791638895 + ... + 41791638906.

It is an arithmetic number, because the mean of its divisors is an integer number (125374916703).

Almost surely, 2^501499666806 is an apocalyptic number.

501499666806 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

501499666806 is a wasteful number, since it uses less digits than its factorization.

501499666806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83583277806.

The product of its (nonzero) digits is 16796160, while the sum is 60.

The spelling of 501499666806 in words is "five hundred one billion, four hundred ninety-nine million, six hundred sixty-six thousand, eight hundred six".