2166043112455 has 8 divisors (see below), whose sum is σ = 2607556055472. Its totient is φ = 1727298276288.

The previous prime is 2166043112423. The next prime is 2166043112473. The reversal of 2166043112455 is 5542113406612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2166043112455 - 2⁵ = 2166043112423 is a prime.

It is a super-2 number, since 2×2166043112455² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

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, 692024989 + ... + 692028118.

It is an arithmetic number, because the mean of its divisors is an integer number (325944506934).

Almost surely, 2^{2166043112455} is an apocalyptic number.

2166043112455 is a deficient number, since it is larger than the sum of its proper divisors (441512943017).

2166043112455 is a wasteful number, since it uses less digits than its factorization.

2166043112455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384053425.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 2166043112455 in words is "two trillion, one hundred sixty-six billion, forty-three million, one hundred twelve thousand, four hundred fifty-five".