66734074000673 has 4 divisors (see below), whose sum is σ = 66888194264388. Its totient is φ = 66579953736960.

The previous prime is 66734074000661. The next prime is 66734074000681. The reversal of 66734074000673 is 37600047043766.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5300645149969 + 61433428850704 = 2302313^2 + 7837948^2 .

It is a cyclic number.

It is not a de Polignac number, because 66734074000673 - 2⁶ = 66734074000609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66734074000873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77060131208 + ... + 77060132073.

It is an arithmetic number, because the mean of its divisors is an integer number (16722048566097).

Almost surely, 2^{66734074000673} is an apocalyptic number.

It is an amenable number.

66734074000673 is a deficient number, since it is larger than the sum of its proper divisors (154120263715).

66734074000673 is a wasteful number, since it uses less digits than its factorization.

66734074000673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154120263714.

The product of its (nonzero) digits is 10668672, while the sum is 53.

The spelling of 66734074000673 in words is "sixty-six trillion, seven hundred thirty-four billion, seventy-four million, six hundred seventy-three", and thus it is an aban number.