12906915855 has 16 divisors (see below), whose sum is σ = 20670739584. Its totient is φ = 6877130400.

The previous prime is 12906915851. The next prime is 12906915863. The reversal of 12906915855 is 55851960921.

It is not a de Polignac number, because 12906915855 - 2² = 12906915851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12906915798 and 12906915807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12906915851) 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, 393589 + ... + 425118.

It is an arithmetic number, because the mean of its divisors is an integer number (1291921224).

Almost surely, 2^12906915855 is an apocalyptic number.

12906915855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12906915855 is a deficient number, since it is larger than the sum of its proper divisors (7763823729).

12906915855 is a wasteful number, since it uses less digits than its factorization.

12906915855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819766.

The product of its (nonzero) digits is 972000, while the sum is 51.

The spelling of 12906915855 in words is "twelve billion, nine hundred six million, nine hundred fifteen thousand, eight hundred fifty-five".