2166057567783 has 12 divisors (see below), whose sum is σ = 3130209833920. Its totient is φ = 1443364526016.

The previous prime is 2166057567749. The next prime is 2166057567811. The reversal of 2166057567783 is 3877657506612.

It is a happy number.

2166057567783 is a `hidden beast` number, since 2 + 1 + 6 + 60 + 5 + 7 + 567 + 7 + 8 + 3 = 666.

It is not a de Polignac number, because 2166057567783 - 2¹⁰ = 2166057566759 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2166057567783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166057565783) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56134018 + ... + 56172591.

Almost surely, 2^{2166057567783} is an apocalyptic number.

2166057567783 is a deficient number, since it is larger than the sum of its proper divisors (964152266137).

2166057567783 is a wasteful number, since it uses less digits than its factorization.

2166057567783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112308758 (or 112308755 counting only the distinct ones).

The product of its (nonzero) digits is 88905600, while the sum is 63.

The spelling of 2166057567783 in words is "two trillion, one hundred sixty-six billion, fifty-seven million, five hundred sixty-seven thousand, seven hundred eighty-three".