12912639038005 has 16 divisors (see below), whose sum is σ = 17734919840640. Its totient is φ = 8841302188992.

The previous prime is 12912639037913. The next prime is 12912639038021. The reversal of 12912639038005 is 50083093621921.

It is not a de Polignac number, because 12912639038005 - 2¹⁹ = 12912638513717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12912639038005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 272452335 + ... + 272499724.

It is an arithmetic number, because the mean of its divisors is an integer number (1108432490040).

Almost surely, 2^{12912639038005} is an apocalyptic number.

It is an amenable number.

12912639038005 is a deficient number, since it is larger than the sum of its proper divisors (4822280802635).

12912639038005 is an equidigital number, since it uses as much as digits as its factorization.

12912639038005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544952748.

The product of its (nonzero) digits is 699840, while the sum is 49.

The spelling of 12912639038005 in words is "twelve trillion, nine hundred twelve billion, six hundred thirty-nine million, thirty-eight thousand, five".