2166550364160 has 2448 divisors, whose sum is σ = 10057998472704. Its totient is φ = 437243609088.

The previous prime is 2166550364149. The next prime is 2166550364171. The reversal of 2166550364160 is 614630556612.

2166550364160 is a `hidden beast` number, since 2 + 1 + 6 + 6 + 550 + 36 + 4 + 1 + 60 = 666.

It is an interprime number because it is at equal distance from previous prime (2166550364149) and next prime (2166550364171).

It is a super-2 number, since 2×2166550364160² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 94197841909 + ... + 94197841931.

Almost surely, 2^{2166550364160} is an apocalyptic number.

2166550364160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2166550364160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5028999236352).

2166550364160 is an abundant number, since it is smaller than the sum of its proper divisors (7891448108544).

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

2166550364160 is an frugal number, since it uses more digits than its factorization.

2166550364160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 2166550364160 in words is "two trillion, one hundred sixty-six billion, five hundred fifty million, three hundred sixty-four thousand, one hundred sixty".