66044320237 has 8 divisors (see below), whose sum is σ = 78081955200. Its totient is φ = 54657368304.

The previous prime is 66044320231. The next prime is 66044320247. The reversal of 66044320237 is 73202344066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66044320237 - 2³ = 66044320229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66044320196 and 66044320205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66044320231) 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 7 ways as a sum of consecutive naturals, for example, 162670537 + ... + 162670942.

It is an arithmetic number, because the mean of its divisors is an integer number (9760244400).

Almost surely, 2^66044320237 is an apocalyptic number.

It is an amenable number.

66044320237 is a deficient number, since it is larger than the sum of its proper divisors (12037634963).

66044320237 is a wasteful number, since it uses less digits than its factorization.

66044320237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325341515.

The product of its (nonzero) digits is 145152, while the sum is 37.

The spelling of 66044320237 in words is "sixty-six billion, forty-four million, three hundred twenty thousand, two hundred thirty-seven".