77558450663 has 2 divisors, whose sum is σ = 77558450664. Its totient is φ = 77558450662.

The previous prime is 77558450633. The next prime is 77558450677. The reversal of 77558450663 is 36605485577.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77558450663 - 2¹⁴ = 77558434279 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 77558450599 and 77558450608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77558450603) 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, 38779225331 + 38779225332.

It is an arithmetic number, because the mean of its divisors is an integer number (38779225332).

Almost surely, 2^77558450663 is an apocalyptic number.

77558450663 is a deficient number, since it is larger than the sum of its proper divisors (1).

77558450663 is an equidigital number, since it uses as much as digits as its factorization.

77558450663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168000, while the sum is 56.

The spelling of 77558450663 in words is "seventy-seven billion, five hundred fifty-eight million, four hundred fifty thousand, six hundred sixty-three".