66520671310 has 8 divisors (see below), whose sum is σ = 119737208376. Its totient is φ = 26608268520.

The previous prime is 66520671299. The next prime is 66520671341. The reversal of 66520671310 is 1317602566.

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

It is a super-2 number, since 2×66520671310² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66520671310.

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, 3326033556 + ... + 3326033575.

It is an arithmetic number, because the mean of its divisors is an integer number (14967151047).

Almost surely, 2^66520671310 is an apocalyptic number.

66520671310 is a deficient number, since it is larger than the sum of its proper divisors (53216537066).

66520671310 is a wasteful number, since it uses less digits than its factorization.

66520671310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6652067138.

The product of its (nonzero) digits is 45360, while the sum is 37.

The spelling of 66520671310 in words is "sixty-six billion, five hundred twenty million, six hundred seventy-one thousand, three hundred ten".