66711372196 has 48 divisors (see below), whose sum is σ = 134517841920. Its totient is φ = 28356176160.

The previous prime is 66711372187. The next prime is 66711372197. The reversal of 66711372196 is 69127311766.

It is not an unprimeable number, because it can be changed into a prime (66711372197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8208591 + ... + 8216713.

It is an arithmetic number, because the mean of its divisors is an integer number (2802455040).

Almost surely, 2^66711372196 is an apocalyptic number.

It is an amenable number.

66711372196 is an abundant number, since it is smaller than the sum of its proper divisors (67806469724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66711372196 is a wasteful number, since it uses less digits than its factorization.

66711372196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10504 (or 10502 counting only the distinct ones).

The product of its digits is 571536, while the sum is 49.

The spelling of 66711372196 in words is "sixty-six billion, seven hundred eleven million, three hundred seventy-two thousand, one hundred ninety-six".