12232521553 has 6 divisors (see below), whose sum is σ = 14229667986. Its totient is φ = 10485018432.

The previous prime is 12232521551. The next prime is 12232521557. The reversal of 12232521553 is 35512523221.

It can be written as a sum of positive squares in only one way, i.e., 9384378129 + 2848143424 = 96873^2 + 53368^2 .

It is not a de Polignac number, because 12232521553 - 2¹ = 12232521551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12232521551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 124821600 + ... + 124821697.

It is an arithmetic number, because the mean of its divisors is an integer number (2371611331).

Almost surely, 2^12232521553 is an apocalyptic number.

It is an amenable number.

12232521553 is a deficient number, since it is larger than the sum of its proper divisors (1997146433).

12232521553 is an equidigital number, since it uses as much as digits as its factorization.

12232521553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249643311 (or 249643304 counting only the distinct ones).

The product of its digits is 18000, while the sum is 31.

The spelling of 12232521553 in words is "twelve billion, two hundred thirty-two million, five hundred twenty-one thousand, five hundred fifty-three".