12040542435646 has 16 divisors (see below), whose sum is σ = 18229786168176. Its totient is φ = 5963948156736.

The previous prime is 12040542435613. The next prime is 12040542435703. The reversal of 12040542435646 is 64653424504021.

12040542435646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12040542435646² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12040542435596 and 12040542435605.

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, 28340380 + ... + 28762096.

It is an arithmetic number, because the mean of its divisors is an integer number (1139361635511).

Almost surely, 2^{12040542435646} is an apocalyptic number.

12040542435646 is a deficient number, since it is larger than the sum of its proper divisors (6189243732530).

12040542435646 is a wasteful number, since it uses less digits than its factorization.

12040542435646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555243.

The product of its (nonzero) digits is 2764800, while the sum is 46.

Adding to 12040542435646 its reverse (64653424504021), we get a palindrome (76693966939667).

The spelling of 12040542435646 in words is "twelve trillion, forty billion, five hundred forty-two million, four hundred thirty-five thousand, six hundred forty-six".