67728693323 has 2 divisors, whose sum is σ = 67728693324. Its totient is φ = 67728693322.

The previous prime is 67728693259. The next prime is 67728693341. The reversal of 67728693323 is 32339682776.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67728693323 - 2⁶ = 67728693259 is a prime.

It is not a weakly prime, because it can be changed into another prime (67728693223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33864346661 + 33864346662.

It is an arithmetic number, because the mean of its divisors is an integer number (33864346662).

Almost surely, 2^67728693323 is an apocalyptic number.

67728693323 is a deficient number, since it is larger than the sum of its proper divisors (1).

67728693323 is an equidigital number, since it uses as much as digits as its factorization.

67728693323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13716864, while the sum is 56.

The spelling of 67728693323 in words is "sixty-seven billion, seven hundred twenty-eight million, six hundred ninety-three thousand, three hundred twenty-three".