66619642202236 has 48 divisors (see below), whose sum is σ = 119663986579200. Its totient is φ = 32440705903872.

The previous prime is 66619642202221. The next prime is 66619642202237. The reversal of 66619642202236 is 63220224691666.

66619642202236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66619642202237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58182625 + ... + 59316583.

It is an arithmetic number, because the mean of its divisors is an integer number (2492999720400).

Almost surely, 2^{66619642202236} is an apocalyptic number.

It is an amenable number.

66619642202236 is a deficient number, since it is larger than the sum of its proper divisors (53044344376964).

66619642202236 is a wasteful number, since it uses less digits than its factorization.

66619642202236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136338 (or 1136336 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 55.

The spelling of 66619642202236 in words is "sixty-six trillion, six hundred nineteen billion, six hundred forty-two million, two hundred two thousand, two hundred thirty-six".