12405905882 has 8 divisors (see below), whose sum is σ = 19250543700. Its totient is φ = 5989057984.

The previous prime is 12405905881. The next prime is 12405905887. The reversal of 12405905882 is 28850950421.

It can be written as a sum of positive squares in 2 ways, for example, as 12234793321 + 171112561 = 110611^2 + 13081^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12405905881) 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, 106947407 + ... + 106947522.

Almost surely, 2^12405905882 is an apocalyptic number.

12405905882 is a deficient number, since it is larger than the sum of its proper divisors (6844637818).

12405905882 is a wasteful number, since it uses less digits than its factorization.

12405905882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213894960.

The product of its (nonzero) digits is 230400, while the sum is 44.

The spelling of 12405905882 in words is "twelve billion, four hundred five million, nine hundred five thousand, eight hundred eighty-two".