2291166558788 has 12 divisors (see below), whose sum is σ = 4009842159120. Its totient is φ = 1145497370472.

The previous prime is 2291166558773. The next prime is 2291166558817. The reversal of 2291166558788 is 8878556611922.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21417206 + ... + 21523917.

It is an arithmetic number, because the mean of its divisors is an integer number (334153513260).

Almost surely, 2^{2291166558788} is an apocalyptic number.

It is an amenable number.

2291166558788 is a deficient number, since it is larger than the sum of its proper divisors (1718675600332).

2291166558788 is a wasteful number, since it uses less digits than its factorization.

2291166558788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42954466 (or 42954464 counting only the distinct ones).

The product of its digits is 116121600, while the sum is 68.

The spelling of 2291166558788 in words is "two trillion, two hundred ninety-one billion, one hundred sixty-six million, five hundred fifty-eight thousand, seven hundred eighty-eight".