66363305136 has 40 divisors (see below), whose sum is σ = 171613063680. Its totient is φ = 22098582336.

The previous prime is 66363305053. The next prime is 66363305143. The reversal of 66363305136 is 63150336366.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 656056 + ... + 750423.

It is an arithmetic number, because the mean of its divisors is an integer number (4290326592).

Almost surely, 2^66363305136 is an apocalyptic number.

It is an amenable number.

66363305136 is an abundant number, since it is smaller than the sum of its proper divisors (105249758544).

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

66363305136 is a wasteful number, since it uses less digits than its factorization.

66363305136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407473 (or 1407467 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 42.

It can be divided in two parts, 6636330 and 5136, that added together give a palindrome (6641466).

The spelling of 66363305136 in words is "sixty-six billion, three hundred sixty-three million, three hundred five thousand, one hundred thirty-six".