66734000040667 has 16 divisors (see below), whose sum is σ = 68116612531968. Its totient is φ = 65356017966720.

The previous prime is 66734000040637. The next prime is 66734000040679. The reversal of 66734000040667 is 76604000043766.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66734000040667 is a prime.

It is a super-2 number, since 2×66734000040667² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66734000040667.

It is not an unprimeable number, because it can be changed into a prime (66734000040637) 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, 122278198 + ... + 122822740.

It is an arithmetic number, because the mean of its divisors is an integer number (4257288283248).

Almost surely, 2^{66734000040667} is an apocalyptic number.

66734000040667 is a deficient number, since it is larger than the sum of its proper divisors (1382612491301).

66734000040667 is a wasteful number, since it uses less digits than its factorization.

66734000040667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548790.

The product of its (nonzero) digits is 3048192, while the sum is 49.

The spelling of 66734000040667 in words is "sixty-six trillion, seven hundred thirty-four billion, forty thousand, six hundred sixty-seven".