67864040655 has 16 divisors (see below), whose sum is σ = 109004971104. Its totient is φ = 36053319680.

The previous prime is 67864040653. The next prime is 67864040669. The reversal of 67864040655 is 55604046876.

It is not a de Polignac number, because 67864040655 - 2¹ = 67864040653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67864040598 and 67864040607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67864040653) 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 15 ways as a sum of consecutive naturals, for example, 8798226 + ... + 8805935.

It is an arithmetic number, because the mean of its divisors is an integer number (6812810694).

Almost surely, 2^67864040655 is an apocalyptic number.

67864040655 is a deficient number, since it is larger than the sum of its proper divisors (41140930449).

67864040655 is a wasteful number, since it uses less digits than its factorization.

67864040655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17604426.

The product of its (nonzero) digits is 4838400, while the sum is 51.

The spelling of 67864040655 in words is "sixty-seven billion, eight hundred sixty-four million, forty thousand, six hundred fifty-five".