66707373667 has 16 divisors (see below), whose sum is σ = 75114144000. Its totient is φ = 58707491040.

The previous prime is 66707373661. The next prime is 66707373671. The reversal of 66707373667 is 76637370766.

66707373667 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 66707373667 - 2³ = 66707373659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66707373661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330817 + ... + 492802.

It is an arithmetic number, because the mean of its divisors is an integer number (4694634000).

Almost surely, 2^66707373667 is an apocalyptic number.

66707373667 is a deficient number, since it is larger than the sum of its proper divisors (8406770333).

66707373667 is a wasteful number, since it uses less digits than its factorization.

66707373667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823866.

The product of its (nonzero) digits is 28005264, while the sum is 58.

The spelling of 66707373667 in words is "sixty-six billion, seven hundred seven million, three hundred seventy-three thousand, six hundred sixty-seven".