68480085881 has 2 divisors, whose sum is σ = 68480085882. Its totient is φ = 68480085880.

The previous prime is 68480085809. The next prime is 68480086009. The reversal of 68480085881 is 18858008486.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48169275625 + 20310810256 = 219475^2 + 142516^2 .

It is a cyclic number.

It is not a de Polignac number, because 68480085881 - 2¹⁰ = 68480084857 is a prime.

It is a super-2 number, since 2×68480085881² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68480085581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34240042940 + 34240042941.

It is an arithmetic number, because the mean of its divisors is an integer number (34240042941).

Almost surely, 2^68480085881 is an apocalyptic number.

It is an amenable number.

68480085881 is a deficient number, since it is larger than the sum of its proper divisors (1).

68480085881 is an equidigital number, since it uses as much as digits as its factorization.

68480085881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3932160, while the sum is 56.

The spelling of 68480085881 in words is "sixty-eight billion, four hundred eighty million, eighty-five thousand, eight hundred eighty-one".