67991456495 has 8 divisors (see below), whose sum is σ = 82707416016. Its totient is φ = 53648053056.

The previous prime is 67991456441. The next prime is 67991456513. The reversal of 67991456495 is 59465419976.

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

It is a cyclic number.

It is not a de Polignac number, because 67991456495 - 2⁶ = 67991456431 is a prime.

It is a super-2 number, since 2×67991456495² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93138617 + ... + 93139346.

It is an arithmetic number, because the mean of its divisors is an integer number (10338427002).

Almost surely, 2^67991456495 is an apocalyptic number.

67991456495 is a deficient number, since it is larger than the sum of its proper divisors (14715959521).

67991456495 is a wasteful number, since it uses less digits than its factorization.

67991456495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186278041.

The product of its digits is 73483200, while the sum is 65.

The spelling of 67991456495 in words is "sixty-seven billion, nine hundred ninety-one million, four hundred fifty-six thousand, four hundred ninety-five".