2101166307858 has 32 divisors (see below), whose sum is σ = 4340118182400. Its totient is φ = 677447700480.

The previous prime is 2101166307817. The next prime is 2101166307943. The reversal of 2101166307858 is 8587036611012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2535535 + ... + 3260562.

It is an arithmetic number, because the mean of its divisors is an integer number (135628693200).

Almost surely, 2^{2101166307858} is an apocalyptic number.

2101166307858 is an abundant number, since it is smaller than the sum of its proper divisors (2238951874542).

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

2101166307858 is a wasteful number, since it uses less digits than its factorization.

2101166307858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5798082.

The product of its (nonzero) digits is 483840, while the sum is 48.

The spelling of 2101166307858 in words is "two trillion, one hundred one billion, one hundred sixty-six million, three hundred seven thousand, eight hundred fifty-eight".