68455555660 has 12 divisors (see below), whose sum is σ = 143756666928. Its totient is φ = 27382222256.

The previous prime is 68455555631. The next prime is 68455555691. The reversal of 68455555660 is 6655555486.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1711388872 + ... + 1711388911.

It is an arithmetic number, because the mean of its divisors is an integer number (11979722244).

Almost surely, 2^68455555660 is an apocalyptic number.

It is an amenable number.

68455555660 is an abundant number, since it is smaller than the sum of its proper divisors (75301111268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68455555660 is a wasteful number, since it uses less digits than its factorization.

68455555660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3422777792 (or 3422777790 counting only the distinct ones).

The product of its (nonzero) digits is 21600000, while the sum is 55.

The spelling of 68455555660 in words is "sixty-eight billion, four hundred fifty-five million, five hundred fifty-five thousand, six hundred sixty".