67778734741 has 8 divisors (see below), whose sum is σ = 68295164000. Its totient is φ = 67264147440.

The previous prime is 67778734717. The next prime is 67778734763. The reversal of 67778734741 is 14743787776.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67778734741 - 2¹⁹ = 67778210453 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67778734741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67778734241) 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 7 ways as a sum of consecutive naturals, for example, 386571 + ... + 533848.

It is an arithmetic number, because the mean of its divisors is an integer number (8536895500).

Almost surely, 2^67778734741 is an apocalyptic number.

It is an amenable number.

67778734741 is a deficient number, since it is larger than the sum of its proper divisors (516429259).

67778734741 is a wasteful number, since it uses less digits than its factorization.

67778734741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920979.

The product of its digits is 38723328, while the sum is 61.

The spelling of 67778734741 in words is "sixty-seven billion, seven hundred seventy-eight million, seven hundred thirty-four thousand, seven hundred forty-one".