66160731361 has 8 divisors (see below), whose sum is σ = 66264502304. Its totient is φ = 66057012000.

The previous prime is 66160731353. The next prime is 66160731367. The reversal of 66160731361 is 16313706166.

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 66160731361 - 2³ = 66160731353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66160731367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3139861 + ... + 3160861.

It is an arithmetic number, because the mean of its divisors is an integer number (8283062788).

Almost surely, 2^66160731361 is an apocalyptic number.

It is an amenable number.

66160731361 is a deficient number, since it is larger than the sum of its proper divisors (103770943).

66160731361 is a wasteful number, since it uses less digits than its factorization.

66160731361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25791.

The product of its (nonzero) digits is 81648, while the sum is 40.

The spelling of 66160731361 in words is "sixty-six billion, one hundred sixty million, seven hundred thirty-one thousand, three hundred sixty-one".