12426402072661 has 16 divisors (see below), whose sum is σ = 13095036467200. Its totient is φ = 11759231602800.

The previous prime is 12426402072629. The next prime is 12426402072731. The reversal of 12426402072661 is 16627020462421.

It is a cyclic number.

It is not a de Polignac number, because 12426402072661 - 2⁵ = 12426402072629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12426402073661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205940266 + ... + 206000596.

It is an arithmetic number, because the mean of its divisors is an integer number (818439779200).

Almost surely, 2^{12426402072661} is an apocalyptic number.

It is an amenable number.

12426402072661 is a deficient number, since it is larger than the sum of its proper divisors (668634394539).

12426402072661 is a wasteful number, since it uses less digits than its factorization.

12426402072661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72280.

The product of its (nonzero) digits is 387072, while the sum is 43.

The spelling of 12426402072661 in words is "twelve trillion, four hundred twenty-six billion, four hundred two million, seventy-two thousand, six hundred sixty-one".