68574491847 has 12 divisors (see below), whose sum is σ = 99174190024. Its totient is φ = 45659952720.

The previous prime is 68574491809. The next prime is 68574491849. The reversal of 68574491847 is 74819447586.

68574491847 is a `hidden beast` number, since 6 + 8 + 5 + 7 + 449 + 184 + 7 = 666.

It is not a de Polignac number, because 68574491847 - 2⁷ = 68574491719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68574491849) 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, 4690228 + ... + 4704825.

Almost surely, 2^68574491847 is an apocalyptic number.

68574491847 is a deficient number, since it is larger than the sum of its proper divisors (30599698177).

68574491847 is a wasteful number, since it uses less digits than its factorization.

68574491847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9395870 (or 9395867 counting only the distinct ones).

The product of its digits is 54190080, while the sum is 63.

The spelling of 68574491847 in words is "sixty-eight billion, five hundred seventy-four million, four hundred ninety-one thousand, eight hundred forty-seven".