2166062521518 has 96 divisors (see below), whose sum is σ = 5604629980320. Its totient is φ = 618290910720.

The previous prime is 2166062521517. The next prime is 2166062521541. The reversal of 2166062521518 is 8151252606612.

2166062521518 is a `hidden beast` number, since 2 + 1 + 6 + 6 + 0 + 625 + 2 + 1 + 5 + 18 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166062521517) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2421630 + ... + 3193182.

It is an arithmetic number, because the mean of its divisors is an integer number (58381562295).

Almost surely, 2^{2166062521518} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2166062521518, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2802314990160).

2166062521518 is an abundant number, since it is smaller than the sum of its proper divisors (3438567458802).

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

2166062521518 is a wasteful number, since it uses less digits than its factorization.

2166062521518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772639 (or 772626 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 2166062521518 in words is "two trillion, one hundred sixty-six billion, sixty-two million, five hundred twenty-one thousand, five hundred eighteen".