11973475393441 has 3 divisors (see below), whose sum is σ = 11973478853713. Its totient is φ = 11973471933170.

The previous prime is 11973475393381. The next prime is 11973475393471. The reversal of 11973475393441 is 14439357437911.

The square root of 11973475393441 is 3460271.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 11973475393441 - 2¹⁵ = 11973475360673 is a prime.

It is a super-2 number, since 2×11973475393441² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11973475393441.

It is not an unprimeable number, because it can be changed into a prime (11973475393471) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1730136 + ... + 5190406.

Almost surely, 2^{11973475393441} is an apocalyptic number.

11973475393441 is the 3460271-st square number.

11973475393441 is the 1730136-th centered octagonal number.

It is an amenable number.

11973475393441 is a deficient number, since it is larger than the sum of its proper divisors (3460272).

11973475393441 is an frugal number, since it uses more digits than its factorization.

11973475393441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6920542 (or 3460271 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 61.

The spelling of 11973475393441 in words is "eleven trillion, nine hundred seventy-three billion, four hundred seventy-five million, three hundred ninety-three thousand, four hundred forty-one".