67390055149 has 4 divisors (see below), whose sum is σ = 67554823420. Its totient is φ = 67225286880.

The previous prime is 67390055137. The next prime is 67390055221. The reversal of 67390055149 is 94155009376.

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 61330522500 + 6059532649 = 247650^2 + 77843^2 .

It is a cyclic number.

It is not a de Polignac number, because 67390055149 - 2¹⁹ = 67389530861 is a prime.

It is a super-2 number, since 2×67390055149² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67390055849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82383522 + ... + 82384339.

It is an arithmetic number, because the mean of its divisors is an integer number (16888705855).

Almost surely, 2^67390055149 is an apocalyptic number.

It is an amenable number.

67390055149 is a deficient number, since it is larger than the sum of its proper divisors (164768271).

67390055149 is a wasteful number, since it uses less digits than its factorization.

67390055149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164768270.

The product of its (nonzero) digits is 1020600, while the sum is 49.

The spelling of 67390055149 in words is "sixty-seven billion, three hundred ninety million, fifty-five thousand, one hundred forty-nine".