68347976447 has 2 divisors, whose sum is σ = 68347976448. Its totient is φ = 68347976446.

The previous prime is 68347976429. The next prime is 68347976467. The reversal of 68347976447 is 74467974386.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68347976447 - 2²⁰ = 68346927871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68347976467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34173988223 + 34173988224.

It is an arithmetic number, because the mean of its divisors is an integer number (34173988224).

Almost surely, 2^68347976447 is an apocalyptic number.

68347976447 is a deficient number, since it is larger than the sum of its proper divisors (1).

68347976447 is an equidigital number, since it uses as much as digits as its factorization.

68347976447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 170698752, while the sum is 65.

The spelling of 68347976447 in words is "sixty-eight billion, three hundred forty-seven million, nine hundred seventy-six thousand, four hundred forty-seven".