6968642139 has 10 divisors (see below), whose sum is σ = 10409947020. Its totient is φ = 4645761372.

The previous prime is 6968642113. The next prime is 6968642147. The reversal of 6968642139 is 9312468696.

It is not a de Polignac number, because 6968642139 - 2²¹ = 6966544987 is a prime.

It is a super-2 number, since 2×6968642139² = 97123946522892990642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6968640139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 43016229 + ... + 43016390.

It is an arithmetic number, because the mean of its divisors is an integer number (1040994702).

Almost surely, 2^6968642139 is an apocalyptic number.

6968642139 is a deficient number, since it is larger than the sum of its proper divisors (3441304881).

6968642139 is an equidigital number, since it uses as much as digits as its factorization.

6968642139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86032631 (or 86032622 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 54.

The square root of 6968642139 is about 83478.3932463964. The cubic root of 6968642139 is about 1910.0704577318.

The spelling of 6968642139 in words is "six billion, nine hundred sixty-eight million, six hundred forty-two thousand, one hundred thirty-nine".