12456552642 has 16 divisors (see below), whose sum is σ = 25772178240. Its totient is φ = 4009005392.

The previous prime is 12456552629. The next prime is 12456552733. The reversal of 12456552642 is 24625565421.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12456552594 and 12456552603.

It is an unprimeable number.

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, 35794518 + ... + 35794865.

It is an arithmetic number, because the mean of its divisors is an integer number (1610761140).

Almost surely, 2^12456552642 is an apocalyptic number.

12456552642 is an abundant number, since it is smaller than the sum of its proper divisors (13315625598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12456552642 is a wasteful number, since it uses less digits than its factorization.

12456552642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71589417.

The product of its digits is 576000, while the sum is 42.

The spelling of 12456552642 in words is "twelve billion, four hundred fifty-six million, five hundred fifty-two thousand, six hundred forty-two".