68636039186808 has 24 divisors (see below), whose sum is σ = 185889272797800. Its totient is φ = 22878679728912.

The previous prime is 68636039186797. The next prime is 68636039186857. The reversal of 68636039186808 is 80868193063686.

68636039186808 is a `hidden beast` number, since 6 + 8 + 6 + 3 + 603 + 9 + 1 + 8 + 6 + 8 + 0 + 8 = 666.

68636039186808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (72), and also a Moran number because the ratio is a prime number: 953278322039 = 68636039186808 / (6 + 8 + 6 + 3 + 6 + 0 + 3 + 9 + 1 + 8 + 6 + 8 + 0 + 8).

It is a congruent number.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 476639160948 + ... + 476639161091.

It is an arithmetic number, because the mean of its divisors is an integer number (7745386366575).

Almost surely, 2^{68636039186808} is an apocalyptic number.

It is an amenable number.

68636039186808 is an abundant number, since it is smaller than the sum of its proper divisors (117253233610992).

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

68636039186808 is a wasteful number, since it uses less digits than its factorization.

68636039186808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953278322051 (or 953278322044 counting only the distinct ones).

The product of its (nonzero) digits is 429981696, while the sum is 72.

The spelling of 68636039186808 in words is "sixty-eight trillion, six hundred thirty-six billion, thirty-nine million, one hundred eighty-six thousand, eight hundred eight".