2291166558815 has 16 divisors (see below), whose sum is σ = 2793977147808. Its totient is φ = 1803451862016.

The previous prime is 2291166558773. The next prime is 2291166558817. The reversal of 2291166558815 is 5188556611922.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2291166558815 - 2¹⁶ = 2291166493279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2291166558817) 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, 14722457 + ... + 14877266.

It is an arithmetic number, because the mean of its divisors is an integer number (174623571738).

Almost surely, 2^{2291166558815} is an apocalyptic number.

2291166558815 is a deficient number, since it is larger than the sum of its proper divisors (502810588993).

2291166558815 is a wasteful number, since it uses less digits than its factorization.

2291166558815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29599978.

The product of its digits is 10368000, while the sum is 59.

The spelling of 2291166558815 in words is "two trillion, two hundred ninety-one billion, one hundred sixty-six million, five hundred fifty-eight thousand, eight hundred fifteen".