11884297864321 has 9 divisors (see below), whose sum is σ = 11951682075361. Its totient is φ = 11817291508564.

The previous prime is 11884297864319. The next prime is 11884297864447. The reversal of 11884297864321 is 12346879248811.

The square root of 11884297864321 is 3447361.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 11884297864321 - 2¹ = 11884297864319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11884297864721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 617067990 + ... + 617087248.

Almost surely, 2^{11884297864321} is an apocalyptic number.

11884297864321 is the 3447361-st square number.

11884297864321 is the 1723681-st centered octagonal number.

It is an amenable number.

11884297864321 is a deficient number, since it is larger than the sum of its proper divisors (67384211040).

11884297864321 is an frugal number, since it uses more digits than its factorization.

11884297864321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38876 (or 19438 counting only the distinct ones).

The product of its digits is 37158912, while the sum is 64.

Multiplying 11884297864321 by its sum of digits (64), we get a square (760595063316544 = 27578888²).

The spelling of 11884297864321 in words is "eleven trillion, eight hundred eighty-four billion, two hundred ninety-seven million, eight hundred sixty-four thousand, three hundred twenty-one".