34978678629 has 16 divisors (see below), whose sum is σ = 47730513600. Its totient is φ = 22779295616.

The previous prime is 34978678589. The next prime is 34978678633. The reversal of 34978678629 is 92687687943.

It is a cyclic number.

It is not a de Polignac number, because 34978678629 - 2⁸ = 34978678373 is a prime.

It is a super-2 number, since 2×34978678629² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34978678639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 767034 + ... + 811355.

It is an arithmetic number, because the mean of its divisors is an integer number (2983157100).

Almost surely, 2^34978678629 is an apocalyptic number.

It is an amenable number.

34978678629 is a deficient number, since it is larger than the sum of its proper divisors (12751834971).

34978678629 is a wasteful number, since it uses less digits than its factorization.

34978678629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578564.

The product of its digits is 219469824, while the sum is 69.

The spelling of 34978678629 in words is "thirty-four billion, nine hundred seventy-eight million, six hundred seventy-eight thousand, six hundred twenty-nine".