2186434436656 has 40 divisors (see below), whose sum is σ = 4265075526624. Its totient is φ = 1085772518400.

The previous prime is 2186434436633. The next prime is 2186434436663. The reversal of 2186434436656 is 6566344346812.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2186434436656.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13149816 + ... + 13315048.

Almost surely, 2^{2186434436656} is an apocalyptic number.

It is an amenable number.

2186434436656 is a deficient number, since it is larger than the sum of its proper divisors (2078641089968).

2186434436656 is a wasteful number, since it uses less digits than its factorization.

2186434436656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170869 (or 170863 counting only the distinct ones).

The product of its digits is 59719680, while the sum is 58.

The spelling of 2186434436656 in words is "two trillion, one hundred eighty-six billion, four hundred thirty-four million, four hundred thirty-six thousand, six hundred fifty-six".