67227978049 has 4 divisors (see below), whose sum is σ = 67242978736. Its totient is φ = 67212977364.

The previous prime is 67227978011. The next prime is 67227978071. The reversal of 67227978049 is 94087972276.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67227978049 - 2²⁹ = 66691107137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67227988049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7493619 + ... + 7502584.

It is an arithmetic number, because the mean of its divisors is an integer number (16810744684).

Almost surely, 2^67227978049 is an apocalyptic number.

It is an amenable number.

67227978049 is a deficient number, since it is larger than the sum of its proper divisors (15000687).

67227978049 is a wasteful number, since it uses less digits than its factorization.

67227978049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15000686.

The product of its (nonzero) digits is 21337344, while the sum is 61.

The spelling of 67227978049 in words is "sixty-seven billion, two hundred twenty-seven million, nine hundred seventy-eight thousand, forty-nine".