67963924081 has 8 divisors (see below), whose sum is σ = 72207711720. Its totient is φ = 63846816768.

The previous prime is 67963923971. The next prime is 67963924087. The reversal of 67963924081 is 18042936976.

It can be written as a sum of positive squares in 4 ways, for example, as 12684390625 + 55279533456 = 112625^2 + 235116^2 .

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-67963924081 is a prime.

It is a super-2 number, since 2×67963924081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67963924087) by changing a digit.

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, 31668976 + ... + 31671121.

It is an arithmetic number, because the mean of its divisors is an integer number (9025963965).

Almost surely, 2^67963924081 is an apocalyptic number.

It is an amenable number.

67963924081 is a deficient number, since it is larger than the sum of its proper divisors (4243787639).

67963924081 is a wasteful number, since it uses less digits than its factorization.

67963924081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63340163.

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 67963924081 in words is "sixty-seven billion, nine hundred sixty-three million, nine hundred twenty-four thousand, eighty-one".