68469136836 has 12 divisors (see below), whose sum is σ = 159761319312. Its totient is φ = 22823045608.

The previous prime is 68469136817. The next prime is 68469136837. The reversal of 68469136836 is 63863196486.

68469136836 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 (12).

It is a self number, because there is not a number n which added to its sum of digits gives 68469136836.

It is not an unprimeable number, because it can be changed into a prime (68469136837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2852880690 + ... + 2852880713.

It is an arithmetic number, because the mean of its divisors is an integer number (13313443276).

Almost surely, 2^68469136836 is an apocalyptic number.

It is an amenable number.

68469136836 is an abundant number, since it is smaller than the sum of its proper divisors (91292182476).

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

68469136836 is a wasteful number, since it uses less digits than its factorization.

68469136836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5705761410 (or 5705761408 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 60.

The spelling of 68469136836 in words is "sixty-eight billion, four hundred sixty-nine million, one hundred thirty-six thousand, eight hundred thirty-six".