68971417939 has 2 divisors, whose sum is σ = 68971417940. Its totient is φ = 68971417938.

The previous prime is 68971417903. The next prime is 68971417993. The reversal of 68971417939 is 93971417986.

Together with next prime (68971417993) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68971417939 - 2¹³ = 68971409747 is a prime.

It is a super-2 number, since 2×68971417939² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68971417139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34485708969 + 34485708970.

It is an arithmetic number, because the mean of its divisors is an integer number (34485708970).

Almost surely, 2^68971417939 is an apocalyptic number.

68971417939 is a deficient number, since it is larger than the sum of its proper divisors (1).

68971417939 is an equidigital number, since it uses as much as digits as its factorization.

68971417939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20575296, while the sum is 64.

The spelling of 68971417939 in words is "sixty-eight billion, nine hundred seventy-one million, four hundred seventeen thousand, nine hundred thirty-nine".