66570325316 has 12 divisors (see below), whose sum is σ = 127088802960. Its totient is φ = 30259238760.

The previous prime is 66570325303. The next prime is 66570325321. The reversal of 66570325316 is 61352307566.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 1512961939 = 66570325316 / (6 + 6 + 5 + 7 + 0 + 3 + 2 + 5 + 3 + 1 + 6).

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, 756480926 + ... + 756481013.

It is an arithmetic number, because the mean of its divisors is an integer number (10590733580).

Almost surely, 2^66570325316 is an apocalyptic number.

It is an amenable number.

66570325316 is a deficient number, since it is larger than the sum of its proper divisors (60518477644).

66570325316 is a wasteful number, since it uses less digits than its factorization.

66570325316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512961954 (or 1512961952 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 44.

The spelling of 66570325316 in words is "sixty-six billion, five hundred seventy million, three hundred twenty-five thousand, three hundred sixteen".