2291664661922 has 8 divisors (see below), whose sum is σ = 3438426811116. Its totient is φ = 1145522391552.

The previous prime is 2291664661889. The next prime is 2291664661961.

2291664661922 is nontrivially palindromic in base 10.

2291664661922 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2278834795561 + 12829866361 = 1509581^2 + 113269^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 154960463 + ... + 154975250.

Almost surely, 2^{2291664661922} is an apocalyptic number.

2291664661922 is a deficient number, since it is larger than the sum of its proper divisors (1146762149194).

2291664661922 is a wasteful number, since it uses less digits than its factorization.

2291664661922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309939412.

The product of its digits is 6718464, while the sum is 56.

The spelling of 2291664661922 in words is "two trillion, two hundred ninety-one billion, six hundred sixty-four million, six hundred sixty-one thousand, nine hundred twenty-two".