66740740073316 has 18 divisors (see below), whose sum is σ = 168705759629862. Its totient is φ = 22246913357760.

The previous prime is 66740740073291. The next prime is 66740740073333. The reversal of 66740740073316 is 61337004704766.

66740740073316 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 65417296905216 + 1323443168100 = 8088096^2 + 1150410^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×66740740073316³ (a number of 42 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 926954723205 + ... + 926954723276.

It is an arithmetic number, because the mean of its divisors is an integer number (9372542201659).

Almost surely, 2^{66740740073316} is an apocalyptic number.

It is an amenable number.

66740740073316 is an abundant number, since it is smaller than the sum of its proper divisors (101965019556546).

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

66740740073316 is a wasteful number, since it uses less digits than its factorization.

66740740073316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853909446491 (or 1853909446486 counting only the distinct ones).

The product of its (nonzero) digits is 10668672, while the sum is 54.

The spelling of 66740740073316 in words is "sixty-six trillion, seven hundred forty billion, seven hundred forty million, seventy-three thousand, three hundred sixteen".