67680291679 has 32 divisors (see below), whose sum is σ = 90909213696. Its totient is φ = 48660894720.

The previous prime is 67680291667. The next prime is 67680291697. The reversal of 67680291679 is 97619208676.

It is a cyclic number.

It is not a de Polignac number, because 67680291679 - 2¹⁵ = 67680258911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67680291629) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2646934 + ... + 2672380.

It is an arithmetic number, because the mean of its divisors is an integer number (2840912928).

Almost surely, 2^67680291679 is an apocalyptic number.

67680291679 is a deficient number, since it is larger than the sum of its proper divisors (23228922017).

67680291679 is a wasteful number, since it uses less digits than its factorization.

67680291679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28135.

The product of its (nonzero) digits is 13716864, while the sum is 61.

The spelling of 67680291679 in words is "sixty-seven billion, six hundred eighty million, two hundred ninety-one thousand, six hundred seventy-nine".