78633011 has 2 divisors, whose sum is σ = 78633012. Its totient is φ = 78633010.

The previous prime is 78632987. The next prime is 78633031. The reversal of 78633011 is 11033687.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78633011 - 2⁶ = 78632947 is a prime.

It is a super-2 number, since 2×78633011² = 12366300837852242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (78633031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39316505 + 39316506.

It is an arithmetic number, because the mean of its divisors is an integer number (39316506).

Almost surely, 2^78633011 is an apocalyptic number.

78633011 is a deficient number, since it is larger than the sum of its proper divisors (1).

78633011 is an equidigital number, since it uses as much as digits as its factorization.

78633011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 78633011 is about 8867.5256413500. The cubic root of 78633011 is about 428.4185845073.

Adding to 78633011 its reverse (11033687), we get a palindrome (89666698).

The spelling of 78633011 in words is "seventy-eight million, six hundred thirty-three thousand, eleven".