66935150839 has 2 divisors, whose sum is σ = 66935150840. Its totient is φ = 66935150838.

The previous prime is 66935150837. The next prime is 66935150869. The reversal of 66935150839 is 93805153966.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66935150839 - 2¹ = 66935150837 is a prime.

Together with 66935150837, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 66935150839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66935150837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33467575419 + 33467575420.

It is an arithmetic number, because the mean of its divisors is an integer number (33467575420).

Almost surely, 2^66935150839 is an apocalyptic number.

66935150839 is a deficient number, since it is larger than the sum of its proper divisors (1).

66935150839 is an equidigital number, since it uses as much as digits as its factorization.

66935150839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5248800, while the sum is 55.

The spelling of 66935150839 in words is "sixty-six billion, nine hundred thirty-five million, one hundred fifty thousand, eight hundred thirty-nine".