67408548949779 has 4 divisors (see below), whose sum is σ = 89878065266376. Its totient is φ = 44939032633184.

The previous prime is 67408548949757. The next prime is 67408548949829. The reversal of 67408548949779 is 97794984580476.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 67408548949779 - 2⁸ = 67408548949523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67408548949695 and 67408548949704.

It is not an unprimeable number, because it can be changed into a prime (67408548941779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11234758158294 + ... + 11234758158299.

It is an arithmetic number, because the mean of its divisors is an integer number (22469516316594).

Almost surely, 2^{67408548949779} is an apocalyptic number.

67408548949779 is a deficient number, since it is larger than the sum of its proper divisors (22469516316597).

67408548949779 is a wasteful number, since it uses less digits than its factorization.

67408548949779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22469516316596.

The product of its (nonzero) digits is 30725775360, while the sum is 87.

The spelling of 67408548949779 in words is "sixty-seven trillion, four hundred eight billion, five hundred forty-eight million, nine hundred forty-nine thousand, seven hundred seventy-nine".