12435640326442 has 16 divisors (see below), whose sum is σ = 18707202263232. Its totient is φ = 6199931383200.

The previous prime is 12435640326391. The next prime is 12435640326451. The reversal of 12435640326442 is 24462304653421.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12435640326392 and 12435640326401.

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, 5296168 + ... + 7274659.

It is an arithmetic number, because the mean of its divisors is an integer number (1169200141452).

Almost surely, 2^{12435640326442} is an apocalyptic number.

12435640326442 is a deficient number, since it is larger than the sum of its proper divisors (6271561936790).

12435640326442 is a wasteful number, since it uses less digits than its factorization.

12435640326442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12572253.

The product of its (nonzero) digits is 3317760, while the sum is 46.

Adding to 12435640326442 its reverse (24462304653421), we get a palindrome (36897944979863).

The spelling of 12435640326442 in words is "twelve trillion, four hundred thirty-five billion, six hundred forty million, three hundred twenty-six thousand, four hundred forty-two".