67220487423 has 24 divisors (see below), whose sum is σ = 102855495600. Its totient is φ = 42157995264.

The previous prime is 67220487359. The next prime is 67220487437. The reversal of 67220487423 is 32478402276.

It is not a de Polignac number, because 67220487423 - 2⁶ = 67220487359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67220487473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 232573 + ... + 434201.

It is an arithmetic number, because the mean of its divisors is an integer number (4285645650).

Almost surely, 2^67220487423 is an apocalyptic number.

67220487423 is a deficient number, since it is larger than the sum of its proper divisors (35635008177).

67220487423 is a wasteful number, since it uses less digits than its factorization.

67220487423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203831 (or 203828 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 45.

Adding to 67220487423 its reverse (32478402276), we get a palindrome (99698889699).

The spelling of 67220487423 in words is "sixty-seven billion, two hundred twenty million, four hundred eighty-seven thousand, four hundred twenty-three".