68481608881 has 16 divisors (see below), whose sum is σ = 81679996800. Its totient is φ = 56172872448.

The previous prime is 68481608879. The next prime is 68481608887. The reversal of 68481608881 is 18880618486.

It is not a de Polignac number, because 68481608881 - 2¹ = 68481608879 is a prime.

It is a super-2 number, since 2×68481608881² (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 (68481608887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1469751 + ... + 1515628.

It is an arithmetic number, because the mean of its divisors is an integer number (5104999800).

Almost surely, 2^68481608881 is an apocalyptic number.

It is an amenable number.

68481608881 is a deficient number, since it is larger than the sum of its proper divisors (13198387919).

68481608881 is a wasteful number, since it uses less digits than its factorization.

68481608881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2985528.

The product of its (nonzero) digits is 4718592, while the sum is 58.

The spelling of 68481608881 in words is "sixty-eight billion, four hundred eighty-one million, six hundred eight thousand, eight hundred eighty-one".