12471211773 has 18 divisors (see below), whose sum is σ = 19011981534. Its totient is φ = 7876552752.

The previous prime is 12471211771. The next prime is 12471211817. The reversal of 12471211773 is 37711217421.

12471211773 is a `hidden beast` number, since 1 + 2 + 471 + 2 + 117 + 73 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11741239449 + 729972324 = 108357^2 + 27018^2 .

It is not a de Polignac number, because 12471211773 - 2¹ = 12471211771 is a prime.

It is a super-2 number, since 2×12471211773² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12471211771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1915990 + ... + 1922487.

Almost surely, 2^12471211773 is an apocalyptic number.

It is an amenable number.

12471211773 is a deficient number, since it is larger than the sum of its proper divisors (6540769761).

12471211773 is a wasteful number, since it uses less digits than its factorization.

12471211773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3838521 (or 3838499 counting only the distinct ones).

The product of its digits is 16464, while the sum is 36.

The spelling of 12471211773 in words is "twelve billion, four hundred seventy-one million, two hundred eleven thousand, seven hundred seventy-three".