66734033670672 has 80 divisors (see below), whose sum is σ = 172694818074240. Its totient is φ = 22206156875776.

The previous prime is 66734033670671. The next prime is 66734033670677. The reversal of 66734033670672 is 27607633043766.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (66734033670671) 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, 884594938 + ... + 884670374.

It is an arithmetic number, because the mean of its divisors is an integer number (2158685225928).

Almost surely, 2^{66734033670672} is an apocalyptic number.

It is an amenable number.

66734033670672 is an abundant number, since it is smaller than the sum of its proper divisors (105960784403568).

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

66734033670672 is a wasteful number, since it uses less digits than its factorization.

66734033670672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107120 (or 107114 counting only the distinct ones).

The product of its (nonzero) digits is 96018048, while the sum is 60.

The spelling of 66734033670672 in words is "sixty-six trillion, seven hundred thirty-four billion, thirty-three million, six hundred seventy thousand, six hundred seventy-two".