12261436546 has 4 divisors (see below), whose sum is σ = 18392154822. Its totient is φ = 6130718272.

The previous prime is 12261436513. The next prime is 12261436559. The reversal of 12261436546 is 64563416221.

12261436546 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9099061321 + 3162375225 = 95389^2 + 56235^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 12261436499 and 12261436508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3065359135 + ... + 3065359138.

Almost surely, 2^12261436546 is an apocalyptic number.

12261436546 is a deficient number, since it is larger than the sum of its proper divisors (6130718276).

12261436546 is an equidigital number, since it uses as much as digits as its factorization.

12261436546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6130718275.

The product of its digits is 207360, while the sum is 40.

The spelling of 12261436546 in words is "twelve billion, two hundred sixty-one million, four hundred thirty-six thousand, five hundred forty-six".