68078635973 has 8 divisors (see below), whose sum is σ = 68349312408. Its totient is φ = 67808139264.

The previous prime is 68078635967. The next prime is 68078635981. The reversal of 68078635973 is 37953687086.

It can be written as a sum of positive squares in 4 ways, for example, as 1703873284 + 66374762689 = 41278^2 + 257633^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68078635973 - 2²⁰ = 68077587397 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 (68078635903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 741365 + ... + 828117.

It is an arithmetic number, because the mean of its divisors is an integer number (8543664051).

Almost surely, 2^68078635973 is an apocalyptic number.

It is an amenable number.

68078635973 is a deficient number, since it is larger than the sum of its proper divisors (270676435).

68078635973 is a wasteful number, since it uses less digits than its factorization.

68078635973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89863.

The product of its (nonzero) digits is 45722880, while the sum is 62.

The spelling of 68078635973 in words is "sixty-eight billion, seventy-eight million, six hundred thirty-five thousand, nine hundred seventy-three".