67900126681 has 2 divisors, whose sum is σ = 67900126682. Its totient is φ = 67900126680.

The previous prime is 67900126673. The next prime is 67900126711. The reversal of 67900126681 is 18662100976.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67734747081 + 165379600 = 260259^2 + 12860^2 .

It is a cyclic number.

It is not a de Polignac number, because 67900126681 - 2³ = 67900126673 is a prime.

It is a super-2 number, since 2×67900126681² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (67900126381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33950063340 + 33950063341.

It is an arithmetic number, because the mean of its divisors is an integer number (33950063341).

Almost surely, 2^67900126681 is an apocalyptic number.

It is an amenable number.

67900126681 is a deficient number, since it is larger than the sum of its proper divisors (1).

67900126681 is an equidigital number, since it uses as much as digits as its factorization.

67900126681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 67900126681 in words is "sixty-seven billion, nine hundred million, one hundred twenty-six thousand, six hundred eighty-one".