66736740073383 has 16 divisors (see below), whose sum is σ = 101541386299360. Its totient is φ = 43288696263168.

The previous prime is 66736740073379. The next prime is 66736740073417. The reversal of 66736740073383 is 38337004763766.

66736740073383 is a `hidden beast` number, since 6 + 6 + 73 + 67 + 400 + 73 + 38 + 3 = 666.

It is not a de Polignac number, because 66736740073383 - 2² = 66736740073379 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66736740073383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66736740073303) 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 15 ways as a sum of consecutive naturals, for example, 33401770810 + ... + 33401772807.

It is an arithmetic number, because the mean of its divisors is an integer number (6346336643710).

Almost surely, 2^{66736740073383} is an apocalyptic number.

66736740073383 is a deficient number, since it is larger than the sum of its proper divisors (34804646225977).

66736740073383 is a wasteful number, since it uses less digits than its factorization.

66736740073383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66803543663 (or 66803543657 counting only the distinct ones).

The product of its (nonzero) digits is 192036096, while the sum is 63.

The spelling of 66736740073383 in words is "sixty-six trillion, seven hundred thirty-six billion, seven hundred forty million, seventy-three thousand, three hundred eighty-three".