2166643036422 has 40 divisors (see below), whose sum is σ = 4934473628832. Its totient is φ = 710374762800.

The previous prime is 2166643036333. The next prime is 2166643036457. The reversal of 2166643036422 is 2246303466612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 109615854 + ... + 109635617.

Almost surely, 2^{2166643036422} is an apocalyptic number.

2166643036422 is an abundant number, since it is smaller than the sum of its proper divisors (2767830592410).

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

2166643036422 is a wasteful number, since it uses less digits than its factorization.

2166643036422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219251546 (or 219251537 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 45.

The spelling of 2166643036422 in words is "two trillion, one hundred sixty-six billion, six hundred forty-three million, thirty-six thousand, four hundred twenty-two".