66113522531166 has 16 divisors (see below), whose sum is σ = 144247685522688. Its totient is φ = 20034400767000.

The previous prime is 66113522531131. The next prime is 66113522531167.

66113522531166 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×66113522531166² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66113522531167) 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, 500860019110 + ... + 500860019241.

It is an arithmetic number, because the mean of its divisors is an integer number (9015480345168).

Almost surely, 2^{66113522531166} is an apocalyptic number.

66113522531166 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

66113522531166 is an abundant number, since it is smaller than the sum of its proper divisors (78134162991522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66113522531166 is a wasteful number, since it uses less digits than its factorization.

66113522531166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001720038367.

The product of its digits is 1166400, while the sum is 48.

The spelling of 66113522531166 in words is "sixty-six trillion, one hundred thirteen billion, five hundred twenty-two million, five hundred thirty-one thousand, one hundred sixty-six".