6912139205555 has 8 divisors (see below), whose sum is σ = 8487463954992. Its totient is φ = 5401113425568.

The previous prime is 6912139205549. The next prime is 6912139205561. The reversal of 6912139205555 is 5555029312196.

It is an interprime number because it is at equal distance from previous prime (6912139205549) and next prime (6912139205561).

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 6912139205555 - 2¹² = 6912139201459 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6912139205497 and 6912139205506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16074742124 + ... + 16074742553.

It is an arithmetic number, because the mean of its divisors is an integer number (1060932994374).

Almost surely, 2^{6912139205555} is an apocalyptic number.

6912139205555 is a deficient number, since it is larger than the sum of its proper divisors (1575324749437).

6912139205555 is a wasteful number, since it uses less digits than its factorization.

6912139205555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32149484725.

The product of its (nonzero) digits is 3645000, while the sum is 53.

The spelling of 6912139205555 in words is "six trillion, nine hundred twelve billion, one hundred thirty-nine million, two hundred five thousand, five hundred fifty-five".