34978678589 has 2 divisors, whose sum is σ = 34978678590. Its totient is φ = 34978678588.

The previous prime is 34978678583. The next prime is 34978678633. The reversal of 34978678589 is 98587687943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18109084900 + 16869593689 = 134570^2 + 129883^2 .

It is a cyclic number.

It is not a de Polignac number, because 34978678589 - 2¹⁶ = 34978613053 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34978678583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17489339294 + 17489339295.

It is an arithmetic number, because the mean of its divisors is an integer number (17489339295).

Almost surely, 2^34978678589 is an apocalyptic number.

It is an amenable number.

34978678589 is a deficient number, since it is larger than the sum of its proper divisors (1).

34978678589 is an equidigital number, since it uses as much as digits as its factorization.

34978678589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 731566080, while the sum is 74.

The spelling of 34978678589 in words is "thirty-four billion, nine hundred seventy-eight million, six hundred seventy-eight thousand, five hundred eighty-nine".