67889561723 has 2 divisors, whose sum is σ = 67889561724. Its totient is φ = 67889561722.

The previous prime is 67889561717. The next prime is 67889561743. The reversal of 67889561723 is 32716598876.

67889561723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67889561723 - 2¹⁶ = 67889496187 is a prime.

It is not a weakly prime, because it can be changed into another prime (67889561743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33944780861 + 33944780862.

It is an arithmetic number, because the mean of its divisors is an integer number (33944780862).

Almost surely, 2^67889561723 is an apocalyptic number.

67889561723 is a deficient number, since it is larger than the sum of its proper divisors (1).

67889561723 is an equidigital number, since it uses as much as digits as its factorization.

67889561723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30481920, while the sum is 62.

The spelling of 67889561723 in words is "sixty-seven billion, eight hundred eighty-nine million, five hundred sixty-one thousand, seven hundred twenty-three".