77143806379 has 2 divisors, whose sum is σ = 77143806380. Its totient is φ = 77143806378.

The previous prime is 77143806359. The next prime is 77143806391. The reversal of 77143806379 is 97360834177.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77143806379 - 2¹⁵ = 77143773611 is a prime.

It is not a weakly prime, because it can be changed into another prime (77143806359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38571903189 + 38571903190.

It is an arithmetic number, because the mean of its divisors is an integer number (38571903190).

Almost surely, 2^77143806379 is an apocalyptic number.

77143806379 is a deficient number, since it is larger than the sum of its proper divisors (1).

77143806379 is an equidigital number, since it uses as much as digits as its factorization.

77143806379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5334336, while the sum is 55.

The spelling of 77143806379 in words is "seventy-seven billion, one hundred forty-three million, eight hundred six thousand, three hundred seventy-nine".