77443440443 has 2 divisors, whose sum is σ = 77443440444. Its totient is φ = 77443440442.

The previous prime is 77443440433. The next prime is 77443440457. The reversal of 77443440443 is 34404434477.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77443440443 - 2⁶ = 77443440379 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77443440394 and 77443440403.

It is not a weakly prime, because it can be changed into another prime (77443440413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38721720221 + 38721720222.

It is an arithmetic number, because the mean of its divisors is an integer number (38721720222).

Almost surely, 2^77443440443 is an apocalyptic number.

77443440443 is a deficient number, since it is larger than the sum of its proper divisors (1).

77443440443 is an equidigital number, since it uses as much as digits as its factorization.

77443440443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1806336, while the sum is 44.

The spelling of 77443440443 in words is "seventy-seven billion, four hundred forty-three million, four hundred forty thousand, four hundred forty-three".