12580922261 has 4 divisors (see below), whose sum is σ = 12583970412. Its totient is φ = 12577874112.

The previous prime is 12580922243. The next prime is 12580922281. The reversal of 12580922261 is 16222908521.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4224220036 + 8356702225 = 64994^2 + 91415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12580922261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12580922281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1517876 + ... + 1526141.

It is an arithmetic number, because the mean of its divisors is an integer number (3145992603).

Almost surely, 2^12580922261 is an apocalyptic number.

It is an amenable number.

12580922261 is a deficient number, since it is larger than the sum of its proper divisors (3048151).

12580922261 is an equidigital number, since it uses as much as digits as its factorization.

12580922261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3048150.

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 12580922261 in words is "twelve billion, five hundred eighty million, nine hundred twenty-two thousand, two hundred sixty-one".