78000133 has 2 divisors, whose sum is σ = 78000134. Its totient is φ = 78000132.

The previous prime is 78000121. The next prime is 78000157. The reversal of 78000133 is 33100087.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61984129 + 16016004 = 7873^2 + 4002^2 .

It is a cyclic number.

It is not a de Polignac number, because 78000133 - 2⁵ = 78000101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78000113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39000066 + 39000067.

It is an arithmetic number, because the mean of its divisors is an integer number (39000067).

Almost surely, 2^78000133 is an apocalyptic number.

It is an amenable number.

78000133 is a deficient number, since it is larger than the sum of its proper divisors (1).

78000133 is an equidigital number, since it uses as much as digits as its factorization.

78000133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 78000133 is about 8831.7683959669. The cubic root of 78000133 is about 427.2661110173.

The spelling of 78000133 in words is "seventy-eight million, one hundred thirty-three", and thus it is an aban number.