126538650000 has 1080 divisors, whose sum is σ = 541244733120. Its totient is φ = 27025920000.

The previous prime is 126538649933. The next prime is 126538650019. The reversal of 126538650000 is 56835621.

126538650000 is a `hidden beast` number, since 1 + 26 + 53 + 86 + 500 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 910349931 + ... + 910350069.

Almost surely, 2^126538650000 is an apocalyptic number.

126538650000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126538650000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270622366560).

126538650000 is an abundant number, since it is smaller than the sum of its proper divisors (414706083120).

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

126538650000 is a wasteful number, since it uses less digits than its factorization.

126538650000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 126538650000 in words is "one hundred twenty-six billion, five hundred thirty-eight million, six hundred fifty thousand".