66356804252 has 12 divisors (see below), whose sum is σ = 116135368440. Its totient is φ = 33175270416.

The previous prime is 66356804251. The next prime is 66356804323. The reversal of 66356804252 is 25240865366.

It is a junction number, because it is equal to n+sod(n) for n = 66356804197 and 66356804206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66356804251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 734927 + ... + 820262.

It is an arithmetic number, because the mean of its divisors is an integer number (9677947370).

Almost surely, 2^66356804252 is an apocalyptic number.

It is an amenable number.

66356804252 is a deficient number, since it is larger than the sum of its proper divisors (49778564188).

66356804252 is a wasteful number, since it uses less digits than its factorization.

66356804252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565860 (or 1565858 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 47.

The spelling of 66356804252 in words is "sixty-six billion, three hundred fifty-six million, eight hundred four thousand, two hundred fifty-two".