11865318976573 has 4 divisors (see below), whose sum is σ = 11866239566620. Its totient is φ = 11864398386528.

The previous prime is 11865318976543. The next prime is 11865318976597. The reversal of 11865318976573 is 37567981356811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4582866222169 + 7282452754404 = 2140763^2 + 2698602^2 .

It is a cyclic number.

It is not a de Polignac number, because 11865318976573 - 2²⁹ = 11864782105661 is a prime.

It is a super-3 number, since 3×11865318976573³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11865318976543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 460275690 + ... + 460301467.

It is an arithmetic number, because the mean of its divisors is an integer number (2966559891655).

Almost surely, 2^{11865318976573} is an apocalyptic number.

It is an amenable number.

11865318976573 is a deficient number, since it is larger than the sum of its proper divisors (920590047).

11865318976573 is an equidigital number, since it uses as much as digits as its factorization.

11865318976573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920590046.

The product of its digits is 228614400, while the sum is 70.

The spelling of 11865318976573 in words is "eleven trillion, eight hundred sixty-five billion, three hundred eighteen million, nine hundred seventy-six thousand, five hundred seventy-three".