66736740073374 has 24 divisors (see below), whose sum is σ = 165252880182000. Its totient is φ = 19067640020928.

The previous prime is 66736740073331. The next prime is 66736740073379. The reversal of 66736740073374 is 47337004763766.

66736740073374 is a `hidden beast` number, since 6 + 6 + 73 + 67 + 400 + 7 + 33 + 74 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66736740073379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 264828333499 + ... + 264828333750.

It is an arithmetic number, because the mean of its divisors is an integer number (6885536674250).

Almost surely, 2^{66736740073374} is an apocalyptic number.

66736740073374 is an abundant number, since it is smaller than the sum of its proper divisors (98516140108626).

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

66736740073374 is a wasteful number, since it uses less digits than its factorization.

66736740073374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529656667264 (or 529656667261 counting only the distinct ones).

The product of its (nonzero) digits is 224042112, while the sum is 63.

It can be divided in two parts, 66 and 736740073374, that multiplied together give a palindrome (48624844842684).

The spelling of 66736740073374 in words is "sixty-six trillion, seven hundred thirty-six billion, seven hundred forty million, seventy-three thousand, three hundred seventy-four".