66734124801138 has 32 divisors (see below), whose sum is σ = 154745796643200. Its totient is φ = 21277547037648.

The previous prime is 66734124801103. The next prime is 66734124801139. The reversal of 66734124801138 is 83110842143766.

66734124801138 is a `hidden beast` number, since 6 + 6 + 7 + 3 + 41 + 2 + 480 + 113 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66734124801139) 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, 26865588453 + ... + 26865590936.

It is an arithmetic number, because the mean of its divisors is an integer number (4835806145100).

Almost surely, 2^{66734124801138} is an apocalyptic number.

66734124801138 is an abundant number, since it is smaller than the sum of its proper divisors (88011671842062).

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

66734124801138 is a wasteful number, since it uses less digits than its factorization.

66734124801138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53731179423 (or 53731179417 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 66734124801138 in words is "sixty-six trillion, seven hundred thirty-four billion, one hundred twenty-four million, eight hundred one thousand, one hundred thirty-eight".