521001112066 has 8 divisors (see below), whose sum is σ = 806711399424. Its totient is φ = 252097312260.

The previous prime is 521001112039. The next prime is 521001112103. The reversal of 521001112066 is 660211100125.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 521001112066.

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, 4201621810 + ... + 4201621933.

It is an arithmetic number, because the mean of its divisors is an integer number (100838924928).

Almost surely, 2^521001112066 is an apocalyptic number.

521001112066 is a deficient number, since it is larger than the sum of its proper divisors (285710287358).

521001112066 is a wasteful number, since it uses less digits than its factorization.

521001112066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8403243776.

The product of its (nonzero) digits is 720, while the sum is 25.

The spelling of 521001112066 in words is "five hundred twenty-one billion, one million, one hundred twelve thousand, sixty-six".