66163161757213 has 8 divisors (see below), whose sum is σ = 66651762293568. Its totient is φ = 65674643217504.

The previous prime is 66163161757201. The next prime is 66163161757229. The reversal of 66163161757213 is 31275716136166.

It is a happy number.

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

It is not a de Polignac number, because 66163161757213 - 2⁵ = 66163161757181 is a prime.

It is a super-2 number, since 2×66163161757213² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66163161757813) 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, 18878931 + ... + 22107472.

It is an arithmetic number, because the mean of its divisors is an integer number (8331470286696).

Almost surely, 2^{66163161757213} is an apocalyptic number.

It is an amenable number.

66163161757213 is a deficient number, since it is larger than the sum of its proper divisors (488600536355).

66163161757213 is a wasteful number, since it uses less digits than its factorization.

66163161757213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40998323.

The product of its digits is 5715360, while the sum is 55.

The spelling of 66163161757213 in words is "sixty-six trillion, one hundred sixty-three billion, one hundred sixty-one million, seven hundred fifty-seven thousand, two hundred thirteen".