77999011 has 2 divisors, whose sum is σ = 77999012. Its totient is φ = 77999010.

The previous prime is 77998969. The next prime is 77999021. The reversal of 77999011 is 11099977.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77999011 is a prime.

It is not a weakly prime, because it can be changed into another prime (77999021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38999505 + 38999506.

It is an arithmetic number, because the mean of its divisors is an integer number (38999506).

Almost surely, 2^77999011 is an apocalyptic number.

77999011 is a deficient number, since it is larger than the sum of its proper divisors (1).

77999011 is an equidigital number, since it uses as much as digits as its factorization.

77999011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35721, while the sum is 43.

The square root of 77999011 is about 8831.7048750510. The cubic root of 77999011 is about 427.2640623248.

The spelling of 77999011 in words is "seventy-seven million, nine hundred ninety-nine thousand, eleven".