66068312238 has 12 divisors (see below), whose sum is σ = 143148009888. Its totient is φ = 22022770740.

The previous prime is 66068312221. The next prime is 66068312251. The reversal of 66068312238 is 83221386066.

It is a happy number.

66068312238 is a `hidden beast` number, since 6 + 606 + 8 + 3 + 1 + 2 + 2 + 38 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 66068312193 and 66068312202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1835230878 + ... + 1835230913.

It is an arithmetic number, because the mean of its divisors is an integer number (11929000824).

Almost surely, 2^66068312238 is an apocalyptic number.

66068312238 is an abundant number, since it is smaller than the sum of its proper divisors (77079697650).

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

66068312238 is a wasteful number, since it uses less digits than its factorization.

66068312238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3670461799 (or 3670461796 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 66068312238 in words is "sixty-six billion, sixty-eight million, three hundred twelve thousand, two hundred thirty-eight".