67914680779 has 4 divisors (see below), whose sum is σ = 74088742680. Its totient is φ = 61740618880.

The previous prime is 67914680773. The next prime is 67914680819. The reversal of 67914680779 is 97708641976.

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 67914680779 - 2¹³ = 67914672587 is a prime.

It is a super-2 number, since 2×67914680779² (a number of 22 digits) contains 22 as substring.

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 67914680779.

It is not an unprimeable number, because it can be changed into a prime (67914680773) 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 3 ways as a sum of consecutive naturals, for example, 3087030934 + ... + 3087030955.

It is an arithmetic number, because the mean of its divisors is an integer number (18522185670).

Almost surely, 2^67914680779 is an apocalyptic number.

67914680779 is a deficient number, since it is larger than the sum of its proper divisors (6174061901).

67914680779 is a wasteful number, since it uses less digits than its factorization.

67914680779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6174061900.

The product of its (nonzero) digits is 32006016, while the sum is 64.

The spelling of 67914680779 in words is "sixty-seven billion, nine hundred fourteen million, six hundred eighty thousand, seven hundred seventy-nine".