261422446004123 has 16 divisors (see below), whose sum is σ = 277667294206176. Its totient is φ = 245275083578880.

The previous prime is 261422446004117. The next prime is 261422446004143. The reversal of 261422446004123 is 321400644224162.

It is a cyclic number.

It is not a de Polignac number, because 261422446004123 - 2¹⁰ = 261422446003099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261422446004143) 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, 10607336 + ... + 25206357.

It is an arithmetic number, because the mean of its divisors is an integer number (17354205887886).

Almost surely, 2^{261422446004123} is an apocalyptic number.

261422446004123 is a deficient number, since it is larger than the sum of its proper divisors (16244848202053).

261422446004123 is a wasteful number, since it uses less digits than its factorization.

261422446004123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35815054.

The product of its (nonzero) digits is 442368, while the sum is 41.

The spelling of 261422446004123 in words is "two hundred sixty-one trillion, four hundred twenty-two billion, four hundred forty-six million, four thousand, one hundred twenty-three".