12278580261 has 8 divisors (see below), whose sum is σ = 16639824864. Its totient is φ = 8051527920.

The previous prime is 12278580239. The next prime is 12278580263. The reversal of 12278580261 is 16208587221.

12278580261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12278580261 - 2⁵ = 12278580229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12278580263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33547851 + ... + 33548216.

It is an arithmetic number, because the mean of its divisors is an integer number (2079978108).

Almost surely, 2^12278580261 is an apocalyptic number.

It is an amenable number.

12278580261 is a deficient number, since it is larger than the sum of its proper divisors (4361244603).

12278580261 is an equidigital number, since it uses as much as digits as its factorization.

12278580261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67096131.

The product of its (nonzero) digits is 107520, while the sum is 42.

The spelling of 12278580261 in words is "twelve billion, two hundred seventy-eight million, five hundred eighty thousand, two hundred sixty-one".