1115166166220 has 48 divisors (see below), whose sum is σ = 2352940047360. Its totient is φ = 443954882496.

The previous prime is 1115166166139. The next prime is 1115166166253. The reversal of 1115166166220 is 226616615111.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19072991 + ... + 19131369.

It is an arithmetic number, because the mean of its divisors is an integer number (49019584320).

Almost surely, 2^{1115166166220} is an apocalyptic number.

1115166166220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1115166166220 is an abundant number, since it is smaller than the sum of its proper divisors (1237773881140).

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

1115166166220 is a wasteful number, since it uses less digits than its factorization.

1115166166220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62894 (or 62892 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The spelling of 1115166166220 in words is "one trillion, one hundred fifteen billion, one hundred sixty-six million, one hundred sixty-six thousand, two hundred twenty".