66736704033737 has 4 divisors (see below), whose sum is σ = 67867834610640. Its totient is φ = 65605573456836.

The previous prime is 66736704033733. The next prime is 66736704033757. The reversal of 66736704033737 is 73733040763766.

It is a happy number.

66736704033737 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66736704033737 - 2² = 66736704033733 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 66736704033737.

It is not an unprimeable number, because it can be changed into a prime (66736704033733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 565565288363 + ... + 565565288480.

It is an arithmetic number, because the mean of its divisors is an integer number (16966958652660).

Almost surely, 2^{66736704033737} is an apocalyptic number.

It is an amenable number.

66736704033737 is a deficient number, since it is larger than the sum of its proper divisors (1131130576903).

66736704033737 is a wasteful number, since it uses less digits than its factorization.

66736704033737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131130576902.

The product of its (nonzero) digits is 168031584, while the sum is 62.

The spelling of 66736704033737 in words is "sixty-six trillion, seven hundred thirty-six billion, seven hundred four million, thirty-three thousand, seven hundred thirty-seven".