68347908549 has 12 divisors (see below), whose sum is σ = 98809659936. Its totient is φ = 45526086312.

The previous prime is 68347908539. The next prime is 68347908617. The reversal of 68347908549 is 94580974386.

68347908549 is a `hidden beast` number, since 6 + 83 + 4 + 7 + 9 + 0 + 8 + 549 = 666.

It is not a de Polignac number, because 68347908549 - 2²⁵ = 68314354117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68347908539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3254457 + ... + 3275390.

It is an arithmetic number, because the mean of its divisors is an integer number (8234138328).

Almost surely, 2^68347908549 is an apocalyptic number.

It is an amenable number.

68347908549 is a deficient number, since it is larger than the sum of its proper divisors (30461751387).

68347908549 is a wasteful number, since it uses less digits than its factorization.

68347908549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6531016 (or 6531013 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 63.

The spelling of 68347908549 in words is "sixty-eight billion, three hundred forty-seven million, nine hundred eight thousand, five hundred forty-nine".