66055225061166 has 32 divisors (see below), whose sum is σ = 144123583661568. Its totient is φ = 20016305336640.

The previous prime is 66055225061131. The next prime is 66055225061171. The reversal of 66055225061166 is 66116052255066.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7632511 + ... + 13797306.

It is an arithmetic number, because the mean of its divisors is an integer number (4503861989424).

Almost surely, 2^{66055225061166} is an apocalyptic number.

66055225061166 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

66055225061166 is an abundant number, since it is smaller than the sum of its proper divisors (78068358600402).

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

66055225061166 is a wasteful number, since it uses less digits than its factorization.

66055225061166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21476536.

The product of its (nonzero) digits is 3888000, while the sum is 51.

The spelling of 66055225061166 in words is "sixty-six trillion, fifty-five billion, two hundred twenty-five million, sixty-one thousand, one hundred sixty-six".