66536443330500 has 192 divisors, whose sum is σ = 227627222135040. Its totient is φ = 14889273984000.

The previous prime is 66536443330493. The next prime is 66536443330501. The reversal of 66536443330500 is 503334463566.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 66536443330500.

It is not an unprimeable number, because it can be changed into a prime (66536443330501) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 154882105 + ... + 155311104.

It is an arithmetic number, because the mean of its divisors is an integer number (1185558448620).

Almost surely, 2^{66536443330500} is an apocalyptic number.

66536443330500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66536443330500 is an abundant number, since it is smaller than the sum of its proper divisors (161090778804540).

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

66536443330500 is a wasteful number, since it uses less digits than its factorization.

66536443330500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310193255 (or 310193243 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 48.

The spelling of 66536443330500 in words is "sixty-six trillion, five hundred thirty-six billion, four hundred forty-three million, three hundred thirty thousand, five hundred".