66736736734071 has 16 divisors (see below), whose sum is σ = 94494494499840. Its totient is φ = 41776513349760.

The previous prime is 66736736734067. The next prime is 66736736734081. The reversal of 66736736734071 is 17043763763766.

It is not a de Polignac number, because 66736736734071 - 2² = 66736736734067 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66736736733993 and 66736736734011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66736736734001) 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, 5180612775 + ... + 5180625656.

It is an arithmetic number, because the mean of its divisors is an integer number (5905905906240).

Almost surely, 2^{66736736734071} is an apocalyptic number.

66736736734071 is a deficient number, since it is larger than the sum of its proper divisors (27757757765769).

66736736734071 is a wasteful number, since it uses less digits than its factorization.

66736736734071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10361238566.

The product of its (nonzero) digits is 336063168, while the sum is 66.

The spelling of 66736736734071 in words is "sixty-six trillion, seven hundred thirty-six billion, seven hundred thirty-six million, seven hundred thirty-four thousand, seventy-one".