261444222322 has 4 divisors (see below), whose sum is σ = 392166333486. Its totient is φ = 130722111160.

The previous prime is 261444222307. The next prime is 261444222353. The reversal of 261444222322 is 223222444162.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 171761342481 + 89682879841 = 414441^2 + 299471^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65361055579 + ... + 65361055582.

Almost surely, 2^261444222322 is an apocalyptic number.

261444222322 is a deficient number, since it is larger than the sum of its proper divisors (130722111164).

261444222322 is a wasteful number, since it uses less digits than its factorization.

261444222322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130722111163.

The product of its digits is 73728, while the sum is 34.

Adding to 261444222322 its reverse (223222444162), we get a palindrome (484666666484).

The spelling of 261444222322 in words is "two hundred sixty-one billion, four hundred forty-four million, two hundred twenty-two thousand, three hundred twenty-two".