12161057642 has 64 divisors (see below), whose sum is σ = 20028653568. Its totient is φ = 5524848000.

The previous prime is 12161057609. The next prime is 12161057687. The reversal of 12161057642 is 24675016121.

12161057642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 in 31 ways as a sum of consecutive naturals, for example, 7759943 + ... + 7761509.

It is an arithmetic number, because the mean of its divisors is an integer number (312947712).

Almost surely, 2^12161057642 is an apocalyptic number.

12161057642 is a deficient number, since it is larger than the sum of its proper divisors (7867595926).

12161057642 is a wasteful number, since it uses less digits than its factorization.

12161057642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1755.

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 12161057642 in words is "twelve billion, one hundred sixty-one million, fifty-seven thousand, six hundred forty-two".