66736707406735 has 16 divisors (see below), whose sum is σ = 84311867727360. Its totient is φ = 50571677959200.

The previous prime is 66736707406723. The next prime is 66736707406739. The reversal of 66736707406735 is 53760470763766.

It is not a de Polignac number, because 66736707406735 - 2²¹ = 66736705309583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66736707406739) 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, 52994787 + ... + 54239476.

It is an arithmetic number, because the mean of its divisors is an integer number (5269491732960).

Almost surely, 2^{66736707406735} is an apocalyptic number.

66736707406735 is a deficient number, since it is larger than the sum of its proper divisors (17575160320625).

66736707406735 is a wasteful number, since it uses less digits than its factorization.

66736707406735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107240838.

The product of its (nonzero) digits is 560105280, while the sum is 67.

The spelling of 66736707406735 in words is "sixty-six trillion, seven hundred thirty-six billion, seven hundred seven million, four hundred six thousand, seven hundred thirty-five".