67728658419 has 6 divisors (see below), whose sum is σ = 97830284396. Its totient is φ = 45152438940.

The previous prime is 67728658399. The next prime is 67728658511. The reversal of 67728658419 is 91485682776.

It is not a de Polignac number, because 67728658419 - 2⁸ = 67728658163 is a prime.

It is a super-2 number, since 2×67728658419² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67728658219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3762703237 + ... + 3762703254.

Almost surely, 2^67728658419 is an apocalyptic number.

67728658419 is a deficient number, since it is larger than the sum of its proper divisors (30101625977).

67728658419 is a wasteful number, since it uses less digits than its factorization.

67728658419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7525406497 (or 7525406494 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 63.

The spelling of 67728658419 in words is "sixty-seven billion, seven hundred twenty-eight million, six hundred fifty-eight thousand, four hundred nineteen".