66200243600800 has 36 divisors (see below), whose sum is σ = 161611344692406. Its totient is φ = 26480097440000.

The previous prime is 66200243600783. The next prime is 66200243600837. The reversal of 66200243600800 is 800634200266.

It can be written as a sum of positive squares in 3 ways, for example, as 47172885535504 + 19027358065296 = 6868252^2 + 4362036^2 .

It is a super-2 number, since 2×66200243600800² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66200243600800.

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, 41375151451 + ... + 41375153050.

Almost surely, 2^{66200243600800} is an apocalyptic number.

It is an amenable number.

66200243600800 is an abundant number, since it is smaller than the sum of its proper divisors (95411101091606).

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

66200243600800 is a wasteful number, since it uses less digits than its factorization.

66200243600800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82750304521 (or 82750304508 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 37.

The spelling of 66200243600800 in words is "sixty-six trillion, two hundred billion, two hundred forty-three million, six hundred thousand, eight hundred".