12805881415 has 8 divisors (see below), whose sum is σ = 15374834640. Its totient is φ = 10239520512.

The previous prime is 12805881349. The next prime is 12805881469. The reversal of 12805881415 is 51418850821.

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

It is a cyclic number.

It is not a de Polignac number, because 12805881415 - 2⁹ = 12805880903 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 637194 + ... + 656983.

It is an arithmetic number, because the mean of its divisors is an integer number (1921854330).

Almost surely, 2^12805881415 is an apocalyptic number.

12805881415 is a deficient number, since it is larger than the sum of its proper divisors (2568953225).

12805881415 is a wasteful number, since it uses less digits than its factorization.

12805881415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296161.

The product of its (nonzero) digits is 102400, while the sum is 43.

The spelling of 12805881415 in words is "twelve billion, eight hundred five million, eight hundred eighty-one thousand, four hundred fifteen".