66630315761 has 8 divisors (see below), whose sum is σ = 68284296960. Its totient is φ = 64981081872.

The previous prime is 66630315733. The next prime is 66630315769. The reversal of 66630315761 is 16751303666.

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

It is a cyclic number.

It is not a de Polignac number, because 66630315761 - 2¹⁴ = 66630299377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66630315769) 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 7 ways as a sum of consecutive naturals, for example, 1158401 + ... + 1214558.

It is an arithmetic number, because the mean of its divisors is an integer number (8535537120).

Almost surely, 2^66630315761 is an apocalyptic number.

It is an amenable number.

66630315761 is a deficient number, since it is larger than the sum of its proper divisors (1653981199).

66630315761 is a wasteful number, since it uses less digits than its factorization.

66630315761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2373655.

The product of its (nonzero) digits is 408240, while the sum is 44.

The spelling of 66630315761 in words is "sixty-six billion, six hundred thirty million, three hundred fifteen thousand, seven hundred sixty-one".