66570360145 has 8 divisors (see below), whose sum is σ = 80325783720. Its totient is φ = 52962053760.

The previous prime is 66570360121. The next prime is 66570360167. The reversal of 66570360145 is 54106307566.

It can be written as a sum of positive squares in 4 ways, for example, as 317659329 + 66252700816 = 17823^2 + 257396^2 .

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

It is not a de Polignac number, because 66570360145 - 2⁵ = 66570360113 is a prime.

It is a super-2 number, since 2×66570360145² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36778300 + ... + 36780109.

It is an arithmetic number, because the mean of its divisors is an integer number (10040722965).

Almost surely, 2^66570360145 is an apocalyptic number.

It is an amenable number.

66570360145 is a deficient number, since it is larger than the sum of its proper divisors (13755423575).

66570360145 is a wasteful number, since it uses less digits than its factorization.

66570360145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73558595.

The product of its (nonzero) digits is 453600, while the sum is 43.

The spelling of 66570360145 in words is "sixty-six billion, five hundred seventy million, three hundred sixty thousand, one hundred forty-five".