67947730915 has 8 divisors (see below), whose sum is σ = 82056623760. Its totient is φ = 54011953632.

The previous prime is 67947730909. The next prime is 67947730937. The reversal of 67947730915 is 51903774976.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67947730915 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67947730915.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43278025 + ... + 43279594.

It is an arithmetic number, because the mean of its divisors is an integer number (10257077970).

Almost surely, 2^67947730915 is an apocalyptic number.

67947730915 is a deficient number, since it is larger than the sum of its proper divisors (14108892845).

67947730915 is a wasteful number, since it uses less digits than its factorization.

67947730915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86557781.

The product of its (nonzero) digits is 10001880, while the sum is 58.

The spelling of 67947730915 in words is "sixty-seven billion, nine hundred forty-seven million, seven hundred thirty thousand, nine hundred fifteen".