77755280063 has 2 divisors, whose sum is σ = 77755280064. Its totient is φ = 77755280062.

The previous prime is 77755280023. The next prime is 77755280069. The reversal of 77755280063 is 36008255777.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77755280063 - 2¹⁴ = 77755263679 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77755279993 and 77755280020.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77755280069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38877640031 + 38877640032.

It is an arithmetic number, because the mean of its divisors is an integer number (38877640032).

Almost surely, 2^77755280063 is an apocalyptic number.

77755280063 is a deficient number, since it is larger than the sum of its proper divisors (1).

77755280063 is an equidigital number, since it uses as much as digits as its factorization.

77755280063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2469600, while the sum is 50.

The spelling of 77755280063 in words is "seventy-seven billion, seven hundred fifty-five million, two hundred eighty thousand, sixty-three".