2186486906256 has 160 divisors (see below), whose sum is σ = 6616666684800. Its totient is φ = 689390714880.

The previous prime is 2186486906249. The next prime is 2186486906269. The reversal of 2186486906256 is 6526096846812.

2186486906256 is a `hidden beast` number, since 2 + 1 + 8 + 6 + 486 + 90 + 62 + 5 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2186486906193 and 2186486906202.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5053540 + ... + 5469116.

It is an arithmetic number, because the mean of its divisors is an integer number (41354166780).

Almost surely, 2^{2186486906256} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2186486906256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3308333342400).

2186486906256 is an abundant number, since it is smaller than the sum of its proper divisors (4430179778544).

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

2186486906256 is a wasteful number, since it uses less digits than its factorization.

2186486906256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416254 (or 416242 counting only the distinct ones).

The product of its (nonzero) digits is 59719680, while the sum is 63.

The spelling of 2186486906256 in words is "two trillion, one hundred eighty-six billion, four hundred eighty-six million, nine hundred six thousand, two hundred fifty-six".