77763466334357 has 2 divisors, whose sum is σ = 77763466334358. Its totient is φ = 77763466334356.

The previous prime is 77763466334311. The next prime is 77763466334387. The reversal of 77763466334357 is 75343366436777.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77701862597956 + 61603736401 = 8814866^2 + 248201^2 .

It is a cyclic number.

It is not a de Polignac number, because 77763466334357 - 2¹⁶ = 77763466268821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77763466334387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38881733167178 + 38881733167179.

It is an arithmetic number, because the mean of its divisors is an integer number (38881733167179).

Almost surely, 2^{77763466334357} is an apocalyptic number.

It is an amenable number.

77763466334357 is a deficient number, since it is larger than the sum of its proper divisors (1).

77763466334357 is an equidigital number, since it uses as much as digits as its factorization.

77763466334357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360631680, while the sum is 71.

The spelling of 77763466334357 in words is "seventy-seven trillion, seven hundred sixty-three billion, four hundred sixty-six million, three hundred thirty-four thousand, three hundred fifty-seven".