261223323322162 has 4 divisors (see below), whose sum is σ = 391834984983246. Its totient is φ = 130611661661080.

The previous prime is 261223323322151. The next prime is 261223323322163.

261223323322162 is nontrivially palindromic in base 10.

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., 217722980082721 + 43500343239441 = 14755439^2 + 6595479^2 .

It is not an unprimeable number, because it can be changed into a prime (261223323322163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65305830830539 + ... + 65305830830542.

Almost surely, 2^{261223323322162} is an apocalyptic number.

261223323322162 is a deficient number, since it is larger than the sum of its proper divisors (130611661661084).

261223323322162 is a wasteful number, since it uses less digits than its factorization.

261223323322162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130611661661083.

The product of its digits is 373248, while the sum is 40.

The spelling of 261223323322162 in words is "two hundred sixty-one trillion, two hundred twenty-three billion, three hundred twenty-three million, three hundred twenty-two thousand, one hundred sixty-two".