66716522146 has 16 divisors (see below), whose sum is σ = 101527388928. Its totient is φ = 32874458400.

The previous prime is 66716522143. The next prime is 66716522203. The reversal of 66716522146 is 64122561766.

66716522146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 66716522096 and 66716522105.

It is not an unprimeable number, because it can be changed into a prime (66716522143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239806 + ... + 436966.

It is an arithmetic number, because the mean of its divisors is an integer number (6345461808).

Almost surely, 2^66716522146 is an apocalyptic number.

66716522146 is a deficient number, since it is larger than the sum of its proper divisors (34810866782).

66716522146 is a wasteful number, since it uses less digits than its factorization.

66716522146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199617.

The product of its digits is 725760, while the sum is 46.

The spelling of 66716522146 in words is "sixty-six billion, seven hundred sixteen million, five hundred twenty-two thousand, one hundred forty-six".