126002645406661 has 32 divisors (see below), whose sum is σ = 135442144051200. Its totient is φ = 117011402112000.

The previous prime is 126002645406653. The next prime is 126002645406749. The reversal of 126002645406661 is 166604546200621.

It is a cyclic number.

It is not a de Polignac number, because 126002645406661 - 2³ = 126002645406653 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 (126002645406061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18689775 + ... + 24521683.

It is an arithmetic number, because the mean of its divisors is an integer number (4232567001600).

Almost surely, 2^{126002645406661} is an apocalyptic number.

It is an amenable number.

126002645406661 is a deficient number, since it is larger than the sum of its proper divisors (9439498644539).

126002645406661 is a wasteful number, since it uses less digits than its factorization.

126002645406661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5832261.

The product of its (nonzero) digits is 2488320, while the sum is 49.

The spelling of 126002645406661 in words is "one hundred twenty-six trillion, two billion, six hundred forty-five million, four hundred six thousand, six hundred sixty-one".