68839056929 has 8 divisors (see below), whose sum is σ = 69481137000. Its totient is φ = 68197168512.

The previous prime is 68839056901. The next prime is 68839057103. The reversal of 68839056929 is 92965093886.

It can be written as a sum of positive squares in 4 ways, for example, as 30394435600 + 38444621329 = 174340^2 + 196073^2 .

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 68839056929 - 2¹⁶ = 68838991393 is a prime.

It is a super-2 number, since 2×68839056929² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68839056329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 732767 + ... + 821355.

It is an arithmetic number, because the mean of its divisors is an integer number (8685142125).

Almost surely, 2^68839056929 is an apocalyptic number.

It is an amenable number.

68839056929 is a deficient number, since it is larger than the sum of its proper divisors (642080071).

68839056929 is a wasteful number, since it uses less digits than its factorization.

68839056929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95827.

The product of its (nonzero) digits is 50388480, while the sum is 65.

The spelling of 68839056929 in words is "sixty-eight billion, eight hundred thirty-nine million, fifty-six thousand, nine hundred twenty-nine".