67982016578 has 8 divisors (see below), whose sum is σ = 116540599872. Its totient is φ = 29135149956.

The previous prime is 67982016569. The next prime is 67982016581. The reversal of 67982016578 is 87561028976.

It is a happy number.

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

It is a super-2 number, since 2×67982016578² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2427929150 + ... + 2427929177.

It is an arithmetic number, because the mean of its divisors is an integer number (14567574984).

Almost surely, 2^67982016578 is an apocalyptic number.

67982016578 is a deficient number, since it is larger than the sum of its proper divisors (48558583294).

67982016578 is a wasteful number, since it uses less digits than its factorization.

67982016578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4855858336.

The product of its (nonzero) digits is 10160640, while the sum is 59.

The spelling of 67982016578 in words is "sixty-seven billion, nine hundred eighty-two million, sixteen thousand, five hundred seventy-eight".