220166729855 has 8 divisors (see below), whose sum is σ = 264641148000. Its totient is φ = 175839335776.

The previous prime is 220166729831. The next prime is 220166729897. The reversal of 220166729855 is 558927661022.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220166729855 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220166729797 and 220166729806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36752720 + ... + 36758709.

It is an arithmetic number, because the mean of its divisors is an integer number (33080143500).

Almost surely, 2^220166729855 is an apocalyptic number.

220166729855 is a deficient number, since it is larger than the sum of its proper divisors (44474418145).

220166729855 is an equidigital number, since it uses as much as digits as its factorization.

220166729855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73512033.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 220166729855 in words is "two hundred twenty billion, one hundred sixty-six million, seven hundred twenty-nine thousand, eight hundred fifty-five".