66570620205 has 8 divisors (see below), whose sum is σ = 106512992352. Its totient is φ = 35504330768.

The previous prime is 66570620189. The next prime is 66570620231. The reversal of 66570620205 is 50202607566.

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

It is a cyclic number.

It is not a de Polignac number, because 66570620205 - 2⁴ = 66570620189 is a prime.

It is a congruent number.

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, 2219020659 + ... + 2219020688.

It is an arithmetic number, because the mean of its divisors is an integer number (13314124044).

Almost surely, 2^66570620205 is an apocalyptic number.

It is an amenable number.

66570620205 is a deficient number, since it is larger than the sum of its proper divisors (39942372147).

66570620205 is a wasteful number, since it uses less digits than its factorization.

66570620205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4438041355.

The product of its (nonzero) digits is 151200, while the sum is 39.

The spelling of 66570620205 in words is "sixty-six billion, five hundred seventy million, six hundred twenty thousand, two hundred five".