2186171209342 has 16 divisors (see below), whose sum is σ = 3308680224000. Its totient is φ = 1083320352160.

The previous prime is 2186171209337. The next prime is 2186171209351. The reversal of 2186171209342 is 2439021716812.

It is a junction number, because it is equal to n+sod(n) for n = 2186171209292 and 2186171209301.

It is a congruent number.

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, 10534717 + ... + 10740232.

It is an arithmetic number, because the mean of its divisors is an integer number (206792514000).

Almost surely, 2^{2186171209342} is an apocalyptic number.

2186171209342 is a deficient number, since it is larger than the sum of its proper divisors (1122509014658).

2186171209342 is a wasteful number, since it uses less digits than its factorization.

2186171209342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21275411.

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 2186171209342 in words is "two trillion, one hundred eighty-six billion, one hundred seventy-one million, two hundred nine thousand, three hundred forty-two".