67748788836 has 36 divisors (see below), whose sum is σ = 172344686332. Its totient is φ = 22439087424.

The previous prime is 67748788771. The next prime is 67748788843. The reversal of 67748788836 is 63888784776.

67748788836 is a `hidden beast` number, since 67 + 7 + 487 + 8 + 8 + 83 + 6 = 666.

67748788836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 34259788836 + 33489000000 = 185094^2 + 183000^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5987695 + ... + 5998998.

Almost surely, 2^67748788836 is an apocalyptic number.

It is an amenable number.

67748788836 is an abundant number, since it is smaller than the sum of its proper divisors (104595897496).

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

67748788836 is a wasteful number, since it uses less digits than its factorization.

67748788836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11986860 (or 11986855 counting only the distinct ones).

The product of its digits is 606928896, while the sum is 72.

The spelling of 67748788836 in words is "sixty-seven billion, seven hundred forty-eight million, seven hundred eighty-eight thousand, eight hundred thirty-six".