6904147891247 has 2 divisors, whose sum is σ = 6904147891248. Its totient is φ = 6904147891246.

The previous prime is 6904147891117. The next prime is 6904147891273. The reversal of 6904147891247 is 7421987414096.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6904147891247 - 2²² = 6904143696943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6904147891247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6904147891547) by changing a digit.

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 as a sum of consecutive naturals, namely, 3452073945623 + 3452073945624.

It is an arithmetic number, because the mean of its divisors is an integer number (3452073945624).

Almost surely, 2^{6904147891247} is an apocalyptic number.

6904147891247 is a deficient number, since it is larger than the sum of its proper divisors (1).

6904147891247 is an equidigital number, since it uses as much as digits as its factorization.

6904147891247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24385536, while the sum is 62.

The spelling of 6904147891247 in words is "six trillion, nine hundred four billion, one hundred forty-seven million, eight hundred ninety-one thousand, two hundred forty-seven".