67727928412843 has 2 divisors, whose sum is σ = 67727928412844. Its totient is φ = 67727928412842.

The previous prime is 67727928412799. The next prime is 67727928412901. The reversal of 67727928412843 is 34821482972776.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67727928412843 - 2⁴¹ = 65528905157291 is a prime.

It is a super-2 number, since 2×67727928412843² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (67727928412043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33863964206421 + 33863964206422.

It is an arithmetic number, because the mean of its divisors is an integer number (33863964206422).

Almost surely, 2^{67727928412843} is an apocalyptic number.

67727928412843 is a deficient number, since it is larger than the sum of its proper divisors (1).

67727928412843 is an equidigital number, since it uses as much as digits as its factorization.

67727928412843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 455196672, while the sum is 70.

The spelling of 67727928412843 in words is "sixty-seven trillion, seven hundred twenty-seven billion, nine hundred twenty-eight million, four hundred twelve thousand, eight hundred forty-three".