2166280508127 has 16 divisors (see below), whose sum is σ = 3078082206720. Its totient is φ = 1352004854112.

The previous prime is 2166280508107. The next prime is 2166280508177. The reversal of 2166280508127 is 7218050826612.

It is not a de Polignac number, because 2166280508127 - 2⁷ = 2166280507999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166280508107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 333990052 + ... + 333996537.

It is an arithmetic number, because the mean of its divisors is an integer number (192380137920).

Almost surely, 2^{2166280508127} is an apocalyptic number.

2166280508127 is a deficient number, since it is larger than the sum of its proper divisors (911801698593).

2166280508127 is a wasteful number, since it uses less digits than its factorization.

2166280508127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667986662.

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 2166280508127 in words is "two trillion, one hundred sixty-six billion, two hundred eighty million, five hundred eight thousand, one hundred twenty-seven".