126126669343680 has 224 divisors, whose sum is σ = 447518813774400. Its totient is φ = 33439363190784.

The previous prime is 126126669343667. The next prime is 126126669343711. The reversal of 126126669343680 is 86343966621621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40696015 + ... + 43685454.

Almost surely, 2^{126126669343680} is an apocalyptic number.

126126669343680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126126669343680 is an abundant number, since it is smaller than the sum of its proper divisors (321392144430720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126126669343680 is a wasteful number, since it uses less digits than its factorization.

126126669343680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84381668 (or 84381652 counting only the distinct ones).

The product of its (nonzero) digits is 80621568, while the sum is 63.

The spelling of 126126669343680 in words is "one hundred twenty-six trillion, one hundred twenty-six billion, six hundred sixty-nine million, three hundred forty-three thousand, six hundred eighty".