68756438347 has 16 divisors (see below), whose sum is σ = 73681668000. Its totient is φ = 63965341440.

The previous prime is 68756438297. The next prime is 68756438351. The reversal of 68756438347 is 74383465786.

It is a cyclic number.

It is not a de Polignac number, because 68756438347 - 2¹¹ = 68756436299 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68756438357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 667029 + ... + 763177.

It is an arithmetic number, because the mean of its divisors is an integer number (4605104250).

Almost surely, 2^68756438347 is an apocalyptic number.

68756438347 is a deficient number, since it is larger than the sum of its proper divisors (4925229653).

68756438347 is a wasteful number, since it uses less digits than its factorization.

68756438347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96846.

The product of its digits is 81285120, while the sum is 61.

The spelling of 68756438347 in words is "sixty-eight billion, seven hundred fifty-six million, four hundred thirty-eight thousand, three hundred forty-seven".