66600326073 has 12 divisors (see below), whose sum is σ = 92829190160. Its totient is φ = 42469772136.

The previous prime is 66600326033. The next prime is 66600326147. The reversal of 66600326073 is 37062300666.

66600326073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66600326073 - 2¹⁴ = 66600309689 is a prime.

It is a super-3 number, since 3×66600326073³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66600326033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20981503 + ... + 20984676.

Almost surely, 2^66600326073 is an apocalyptic number.

It is an amenable number.

66600326073 is a deficient number, since it is larger than the sum of its proper divisors (26228864087).

66600326073 is a wasteful number, since it uses less digits than its factorization.

66600326073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41966228 (or 41966205 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 39.

It can be divided in two parts, 666003 and 26073, that added together give a triangular number (692076 = T₁₁₇₆).

The spelling of 66600326073 in words is "sixty-six billion, six hundred million, three hundred twenty-six thousand, seventy-three".