665147224772 has 12 divisors (see below), whose sum is σ = 1166635203216. Its totient is φ = 331822881000.

The previous prime is 665147224769. The next prime is 665147224789. The reversal of 665147224772 is 277422741566.

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, 187680854 + ... + 187684397.

It is an arithmetic number, because the mean of its divisors is an integer number (97219600268).

Almost surely, 2^665147224772 is an apocalyptic number.

It is an amenable number.

665147224772 is a deficient number, since it is larger than the sum of its proper divisors (501487978444).

665147224772 is a wasteful number, since it uses less digits than its factorization.

665147224772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375365698 (or 375365696 counting only the distinct ones).

The product of its digits is 7902720, while the sum is 53.

The spelling of 665147224772 in words is "six hundred sixty-five billion, one hundred forty-seven million, two hundred twenty-four thousand, seven hundred seventy-two".