12718193905 has 8 divisors (see below), whose sum is σ = 15262632000. Its totient is φ = 10174022256.

The previous prime is 12718193903. The next prime is 12718193909. The reversal of 12718193905 is 50939181721.

12718193905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12718193905 - 2¹ = 12718193903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12718193903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60436 + ... + 170554.

It is an arithmetic number, because the mean of its divisors is an integer number (1907829000).

Almost surely, 2^12718193905 is an apocalyptic number.

It is an amenable number.

12718193905 is a deficient number, since it is larger than the sum of its proper divisors (2544438095).

12718193905 is a wasteful number, since it uses less digits than its factorization.

12718193905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133223.

The product of its (nonzero) digits is 136080, while the sum is 46.

It can be divided in two parts, 1271 and 8193905, that added together give a triangular number (8195176 = T₄₀₄₈).

The spelling of 12718193905 in words is "twelve billion, seven hundred eighteen million, one hundred ninety-three thousand, nine hundred five".