520664217154 has 8 divisors (see below), whose sum is σ = 783878231808. Its totient is φ = 259371473220.

The previous prime is 520664217119. The next prime is 520664217217. The reversal of 520664217154 is 451712466025.

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 520664217154.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480317002 + ... + 480318085.

It is an arithmetic number, because the mean of its divisors is an integer number (97984778976).

Almost surely, 2^520664217154 is an apocalyptic number.

520664217154 is a deficient number, since it is larger than the sum of its proper divisors (263214014654).

520664217154 is a wasteful number, since it uses less digits than its factorization.

520664217154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960635360.

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 520664217154 in words is "five hundred twenty billion, six hundred sixty-four million, two hundred seventeen thousand, one hundred fifty-four".