12456552641 has 8 divisors (see below), whose sum is σ = 13634663784. Its totient is φ = 11309857920.

The previous prime is 12456552629. The next prime is 12456552733. The reversal of 12456552641 is 14625565421.

It can be written as a sum of positive squares in 4 ways, for example, as 1067394241 + 11389158400 = 32671^2 + 106720^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12456552641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12456552841) 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 7 ways as a sum of consecutive naturals, for example, 7853276 + ... + 7854861.

It is an arithmetic number, because the mean of its divisors is an integer number (1704332973).

Almost surely, 2^12456552641 is an apocalyptic number.

It is an amenable number.

12456552641 is a deficient number, since it is larger than the sum of its proper divisors (1178111143).

12456552641 is a wasteful number, since it uses less digits than its factorization.

12456552641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15708211.

The product of its digits is 288000, while the sum is 41.

The spelling of 12456552641 in words is "twelve billion, four hundred fifty-six million, five hundred fifty-two thousand, six hundred forty-one".