665708602472 has 32 divisors (see below), whose sum is σ = 1250287833600. Its totient is φ = 332298964800.

The previous prime is 665708602337. The next prime is 665708602487. The reversal of 665708602472 is 274206807566.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12332822 + ... + 12386682.

It is an arithmetic number, because the mean of its divisors is an integer number (39071494800).

Almost surely, 2^665708602472 is an apocalyptic number.

It is an amenable number.

665708602472 is a deficient number, since it is larger than the sum of its proper divisors (584579231128).

665708602472 is a wasteful number, since it uses less digits than its factorization.

665708602472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56417 (or 56413 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 53.

The spelling of 665708602472 in words is "six hundred sixty-five billion, seven hundred eight million, six hundred two thousand, four hundred seventy-two".