66733734040071 has 64 divisors (see below), whose sum is σ = 107772942090240. Its totient is φ = 35856522616320.

The previous prime is 66733734040013. The next prime is 66733734040079. The reversal of 66733734040071 is 17004043733766.

It is not a de Polignac number, because 66733734040071 - 2²¹ = 66733731942919 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 66733734039996 and 66733734040023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66733734040079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2278598190 + ... + 2278627476.

It is an arithmetic number, because the mean of its divisors is an integer number (1683952220160).

Almost surely, 2^{66733734040071} is an apocalyptic number.

66733734040071 is a deficient number, since it is larger than the sum of its proper divisors (41039208050169).

66733734040071 is a wasteful number, since it uses less digits than its factorization.

66733734040071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35124.

The product of its (nonzero) digits is 5334336, while the sum is 51.

The spelling of 66733734040071 in words is "sixty-six trillion, seven hundred thirty-three billion, seven hundred thirty-four million, forty thousand, seventy-one".