12431549124949 has 2 divisors, whose sum is σ = 12431549124950. Its totient is φ = 12431549124948.

The previous prime is 12431549124931. The next prime is 12431549124961. The reversal of 12431549124949 is 94942194513421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11393966495025 + 1037582629924 = 3375495^2 + 1018618^2 .

It is a cyclic number.

It is not a de Polignac number, because 12431549124949 - 2¹¹ = 12431549122901 is a prime.

It is a super-2 number, since 2×12431549124949² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12431549124893 and 12431549124902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12431549124349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6215774562474 + 6215774562475.

It is an arithmetic number, because the mean of its divisors is an integer number (6215774562475).

Almost surely, 2^{12431549124949} is an apocalyptic number.

It is an amenable number.

12431549124949 is a deficient number, since it is larger than the sum of its proper divisors (1).

12431549124949 is an equidigital number, since it uses as much as digits as its factorization.

12431549124949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11197440, while the sum is 58.

The spelling of 12431549124949 in words is "twelve trillion, four hundred thirty-one billion, five hundred forty-nine million, one hundred twenty-four thousand, nine hundred forty-nine".