67568987379 has 4 divisors (see below), whose sum is σ = 90091983176. Its totient is φ = 45045991584.

The previous prime is 67568987371. The next prime is 67568987393. The reversal of 67568987379 is 97378986576.

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

It is not a de Polignac number, because 67568987379 - 2³ = 67568987371 is a prime.

It is a super-2 number, since 2×67568987379² (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 67568987379.

It is not an unprimeable number, because it can be changed into a prime (67568987371) 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, 11261497894 + ... + 11261497899.

It is an arithmetic number, because the mean of its divisors is an integer number (22522995794).

Almost surely, 2^67568987379 is an apocalyptic number.

67568987379 is a deficient number, since it is larger than the sum of its proper divisors (22522995797).

67568987379 is a wasteful number, since it uses less digits than its factorization.

67568987379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22522995796.

The product of its digits is 960180480, while the sum is 75.

The spelling of 67568987379 in words is "sixty-seven billion, five hundred sixty-eight million, nine hundred eighty-seven thousand, three hundred seventy-nine".