66506703300 has 54 divisors (see below), whose sum is σ = 208461569498. Its totient is φ = 17735120640.

The previous prime is 66506703299. The next prime is 66506703343. The reversal of 66506703300 is 330760566.

It can be written as a sum of positive squares in 3 ways, for example, as 1322485956 + 65184217344 = 36366^2 + 255312^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 36947269 + ... + 36949068.

Almost surely, 2^66506703300 is an apocalyptic number.

66506703300 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66506703300 is an abundant number, since it is smaller than the sum of its proper divisors (141954866198).

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

66506703300 is a wasteful number, since it uses less digits than its factorization.

66506703300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73896357 (or 73896347 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 36.

The spelling of 66506703300 in words is "sixty-six billion, five hundred six million, seven hundred three thousand, three hundred".