13124121553 has 2 divisors, whose sum is σ = 13124121554. Its totient is φ = 13124121552.

The previous prime is 13124121539. The next prime is 13124121581. The reversal of 13124121553 is 35512142131.

It is an a-pointer prime, because the next prime (13124121581) can be obtained adding 13124121553 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11237696064 + 1886425489 = 106008^2 + 43433^2 .

It is a cyclic number.

It is not a de Polignac number, because 13124121553 - 2²¹ = 13122024401 is a prime.

It is not a weakly prime, because it can be changed into another prime (13124121583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6562060776 + 6562060777.

It is an arithmetic number, because the mean of its divisors is an integer number (6562060777).

Almost surely, 2^13124121553 is an apocalyptic number.

It is an amenable number.

13124121553 is a deficient number, since it is larger than the sum of its proper divisors (1).

13124121553 is an equidigital number, since it uses as much as digits as its factorization.

13124121553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 28.

Adding to 13124121553 its reverse (35512142131), we get a palindrome (48636263684).

The spelling of 13124121553 in words is "thirteen billion, one hundred twenty-four million, one hundred twenty-one thousand, five hundred fifty-three".