67824421457 has 8 divisors (see below), whose sum is σ = 73211160960. Its totient is φ = 62461892880.

The previous prime is 67824421451. The next prime is 67824421463. The reversal of 67824421457 is 75412442876.

It is a happy number.

67824421457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (67824421451) and next prime (67824421463).

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-67824421457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67824421451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6046907 + ... + 6058112.

It is an arithmetic number, because the mean of its divisors is an integer number (9151395120).

Almost surely, 2^67824421457 is an apocalyptic number.

It is an amenable number.

67824421457 is a deficient number, since it is larger than the sum of its proper divisors (5386739503).

67824421457 is a wasteful number, since it uses less digits than its factorization.

67824421457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12105463.

The product of its digits is 3010560, while the sum is 50.

The spelling of 67824421457 in words is "sixty-seven billion, eight hundred twenty-four million, four hundred twenty-one thousand, four hundred fifty-seven".