11557445274664 has 8 divisors (see below), whose sum is σ = 21670209890010. Its totient is φ = 5778722637328.

The previous prime is 11557445274649. The next prime is 11557445274707. The reversal of 11557445274664 is 46647254475511.

It can be written as a sum of positive squares in only one way, i.e., 11343141089764 + 214304184900 = 3367958^2 + 462930^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722340329659 + ... + 722340329674.

Almost surely, 2^{11557445274664} is an apocalyptic number.

It is an amenable number.

11557445274664 is a deficient number, since it is larger than the sum of its proper divisors (10112764615346).

11557445274664 is a wasteful number, since it uses less digits than its factorization.

11557445274664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444680659339 (or 1444680659335 counting only the distinct ones).

The product of its digits is 112896000, while the sum is 61.

The spelling of 11557445274664 in words is "eleven trillion, five hundred fifty-seven billion, four hundred forty-five million, two hundred seventy-four thousand, six hundred sixty-four".