12905930878 has 32 divisors (see below), whose sum is σ = 20133057024. Its totient is φ = 6200580672.

The previous prime is 12905930777. The next prime is 12905930963. The reversal of 12905930878 is 87803950921.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1968001 + ... + 1974547.

It is an arithmetic number, because the mean of its divisors is an integer number (629158032).

Almost surely, 2^12905930878 is an apocalyptic number.

12905930878 is a deficient number, since it is larger than the sum of its proper divisors (7227126146).

12905930878 is a wasteful number, since it uses less digits than its factorization.

12905930878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6976.

The product of its (nonzero) digits is 1088640, while the sum is 52.

The spelling of 12905930878 in words is "twelve billion, nine hundred five million, nine hundred thirty thousand, eight hundred seventy-eight".