68147052489 has 32 divisors (see below), whose sum is σ = 103144880640. Its totient is φ = 44448258816.

The previous prime is 68147052461. The next prime is 68147052497. The reversal of 68147052489 is 98425074186.

It is a happy number.

68147052489 is a `hidden beast` number, since 6 + 81 + 470 + 52 + 48 + 9 = 666.

It is not a de Polignac number, because 68147052489 - 2⁷ = 68147052361 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68147052419) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4074027 + ... + 4090719.

It is an arithmetic number, because the mean of its divisors is an integer number (3223277520).

Almost surely, 2^68147052489 is an apocalyptic number.

It is an amenable number.

68147052489 is a deficient number, since it is larger than the sum of its proper divisors (34997828151).

68147052489 is a wasteful number, since it uses less digits than its factorization.

68147052489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19966 (or 19960 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 68147052489 in words is "sixty-eight billion, one hundred forty-seven million, fifty-two thousand, four hundred eighty-nine".