67027038656449 has 4 divisors (see below), whose sum is σ = 68661844477380. Its totient is φ = 65392232835520.

The previous prime is 67027038656443. The next prime is 67027038656489. The reversal of 67027038656449 is 94465683072076.

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 36817505114049 + 30209533542400 = 6067743^2 + 5496320^2 .

It is a cyclic number.

It is not a de Polignac number, because 67027038656449 - 2¹³ = 67027038648257 is a prime.

It is a super-2 number, since 2×67027038656449² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67027038656443) 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, 817402910404 + ... + 817402910485.

It is an arithmetic number, because the mean of its divisors is an integer number (17165461119345).

Almost surely, 2^{67027038656449} is an apocalyptic number.

It is an amenable number.

67027038656449 is a deficient number, since it is larger than the sum of its proper divisors (1634805820931).

67027038656449 is a wasteful number, since it uses less digits than its factorization.

67027038656449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1634805820930.

The product of its (nonzero) digits is 365783040, while the sum is 67.

The spelling of 67027038656449 in words is "sixty-seven trillion, twenty-seven billion, thirty-eight million, six hundred fifty-six thousand, four hundred forty-nine".