66645626300 has 54 divisors (see below), whose sum is σ = 158963617344. Its totient is φ = 24234768800.

The previous prime is 66645626261. The next prime is 66645626329. The reversal of 66645626300 is 362654666.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2741852 + ... + 2766051.

Almost surely, 2^66645626300 is an apocalyptic number.

It is an amenable number.

66645626300 is an abundant number, since it is smaller than the sum of its proper divisors (92317991044).

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

66645626300 is a wasteful number, since it uses less digits than its factorization.

66645626300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5507939 (or 5507921 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 44.

The spelling of 66645626300 in words is "sixty-six billion, six hundred forty-five million, six hundred twenty-six thousand, three hundred".