66653412260 has 24 divisors (see below), whose sum is σ = 141415181880. Its totient is φ = 26386504704.

The previous prime is 66653412211. The next prime is 66653412271. The reversal of 66653412260 is 6221435666.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1947280384 + 64706131876 = 44128^2 + 254374^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17176775 + ... + 17180654.

It is an arithmetic number, because the mean of its divisors is an integer number (5892299245).

Almost surely, 2^66653412260 is an apocalyptic number.

It is an amenable number.

66653412260 is an abundant number, since it is smaller than the sum of its proper divisors (74761769620).

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

66653412260 is a wasteful number, since it uses less digits than its factorization.

66653412260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34357535 (or 34357533 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 41.

The spelling of 66653412260 in words is "sixty-six billion, six hundred fifty-three million, four hundred twelve thousand, two hundred sixty".