126663601650 has 48 divisors (see below), whose sum is σ = 330658672800. Its totient is φ = 31999224960.

The previous prime is 126663601643. The next prime is 126663601661. The reversal of 126663601650 is 56106366621.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22218835 + ... + 22224534.

It is an arithmetic number, because the mean of its divisors is an integer number (6888722350).

Almost surely, 2^126663601650 is an apocalyptic number.

126663601650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126663601650 is an abundant number, since it is smaller than the sum of its proper divisors (203995071150).

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

126663601650 is a wasteful number, since it uses less digits than its factorization.

126663601650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44443403 (or 44443398 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 42.

The spelling of 126663601650 in words is "one hundred twenty-six billion, six hundred sixty-three million, six hundred one thousand, six hundred fifty".