66707337137 has 4 divisors (see below), whose sum is σ = 76236956736. Its totient is φ = 57177717540.

The previous prime is 66707337091. The next prime is 66707337163. The reversal of 66707337137 is 73173370766.

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 66707337137 - 2²² = 66703142833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66707337337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4764809789 + ... + 4764809802.

It is an arithmetic number, because the mean of its divisors is an integer number (19059239184).

Almost surely, 2^66707337137 is an apocalyptic number.

It is an amenable number.

66707337137 is a deficient number, since it is larger than the sum of its proper divisors (9529619599).

66707337137 is an equidigital number, since it uses as much as digits as its factorization.

66707337137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9529619598.

The product of its (nonzero) digits is 2333772, while the sum is 50.

The spelling of 66707337137 in words is "sixty-six billion, seven hundred seven million, three hundred thirty-seven thousand, one hundred thirty-seven".