1209660585472 has 20 divisors (see below), whose sum is σ = 2416958553636. Its totient is φ = 604830292480.

The previous prime is 1209660585467. The next prime is 1209660585473. The reversal of 1209660585472 is 2745850669021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1209660585473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1181308654 + ... + 1181309677.

Almost surely, 2^{1209660585472} is an apocalyptic number.

It is an amenable number.

1209660585472 is a deficient number, since it is larger than the sum of its proper divisors (1207297968164).

1209660585472 is an frugal number, since it uses more digits than its factorization.

1209660585472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2362618349 (or 2362618333 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 55.

The spelling of 1209660585472 in words is "one trillion, two hundred nine billion, six hundred sixty million, five hundred eighty-five thousand, four hundred seventy-two".