12105601242646 has 16 divisors (see below), whose sum is σ = 18338864310720. Its totient is φ = 5992650892800.

The previous prime is 12105601242629. The next prime is 12105601242677. The reversal of 12105601242646 is 64624210650121.

It is a junction number, because it is equal to n+sod(n) for n = 12105601242599 and 12105601242608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4454995 + ... + 6637633.

It is an arithmetic number, because the mean of its divisors is an integer number (1146179019420).

Almost surely, 2^{12105601242646} is an apocalyptic number.

12105601242646 is a deficient number, since it is larger than the sum of its proper divisors (6233263068074).

12105601242646 is a wasteful number, since it uses less digits than its factorization.

12105601242646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2210199.

The product of its (nonzero) digits is 138240, while the sum is 40.

Adding to 12105601242646 its reverse (64624210650121), we get a palindrome (76729811892767).

The spelling of 12105601242646 in words is "twelve trillion, one hundred five billion, six hundred one million, two hundred forty-two thousand, six hundred forty-six".