1213617580072 has 16 divisors (see below), whose sum is σ = 2409387843060. Its totient is φ = 571114155264.

The previous prime is 1213617580037. The next prime is 1213617580081. The reversal of 1213617580072 is 2700857163121.

It can be written as a sum of positive squares in 2 ways, for example, as 941315205796 + 272302374276 = 970214^2 + 521826^2 .

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 4461829203 + ... + 4461829474.

Almost surely, 2^{1213617580072} is an apocalyptic number.

It is an amenable number.

1213617580072 is a deficient number, since it is larger than the sum of its proper divisors (1195770262988).

1213617580072 is a wasteful number, since it uses less digits than its factorization.

1213617580072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8923658700 (or 8923658696 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 43.

The spelling of 1213617580072 in words is "one trillion, two hundred thirteen billion, six hundred seventeen million, five hundred eighty thousand, seventy-two".