664703624736272 has 80 divisors (see below), whose sum is σ = 1406612671027200. Its totient is φ = 301778773161600.

The previous prime is 664703624736253. The next prime is 664703624736421. The reversal of 664703624736272 is 272637426307466.

It is a junction number, because it is equal to n+sod(n) for n = 664703624736199 and 664703624736208.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1083686729 + ... + 1084299927.

It is an arithmetic number, because the mean of its divisors is an integer number (17582658387840).

Almost surely, 2^{664703624736272} is an apocalyptic number.

It is an amenable number.

664703624736272 is an abundant number, since it is smaller than the sum of its proper divisors (741909046290928).

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

664703624736272 is a wasteful number, since it uses less digits than its factorization.

664703624736272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620532 (or 620526 counting only the distinct ones).

The product of its (nonzero) digits is 512096256, while the sum is 65.

The spelling of 664703624736272 in words is "six hundred sixty-four trillion, seven hundred three billion, six hundred twenty-four million, seven hundred thirty-six thousand, two hundred seventy-two".