2166706651050 has 144 divisors (see below), whose sum is σ = 6027783840000. Its totient is φ = 557324288640.

The previous prime is 2166706651049. The next prime is 2166706651073. The reversal of 2166706651050 is 501566076612.

2166706651050 is a `hidden beast` number, since 2 + 1 + 6 + 6 + 70 + 66 + 510 + 5 + 0 = 666.

It is a super-2 number, since 2×2166706651050² (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 junction number, because it is equal to n+sod(n) for n = 2166706650987 and 2166706651005.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 13479051 + ... + 13638849.

It is an arithmetic number, because the mean of its divisors is an integer number (41859610000).

Almost surely, 2^{2166706651050} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2166706651050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3013891920000).

2166706651050 is an abundant number, since it is smaller than the sum of its proper divisors (3861077188950).

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

2166706651050 is a wasteful number, since it uses less digits than its factorization.

2166706651050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160885 (or 160877 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 2166706651050 in words is "two trillion, one hundred sixty-six billion, seven hundred six million, six hundred fifty-one thousand, fifty".