1768616870477 has 2 divisors, whose sum is σ = 1768616870478. Its totient is φ = 1768616870476.

The previous prime is 1768616870437. The next prime is 1768616870509. The reversal of 1768616870477 is 7740786168671.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1015703168041 + 752913702436 = 1007821^2 + 867706^2 .

It is a cyclic number.

It is not a de Polignac number, because 1768616870477 - 2²⁰ = 1768615821901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1768616870437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 884308435238 + 884308435239.

It is an arithmetic number, because the mean of its divisors is an integer number (884308435239).

Almost surely, 2^{1768616870477} is an apocalyptic number.

It is an amenable number.

1768616870477 is a deficient number, since it is larger than the sum of its proper divisors (1).

1768616870477 is an equidigital number, since it uses as much as digits as its factorization.

1768616870477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 132765696, while the sum is 68.

The spelling of 1768616870477 in words is "one trillion, seven hundred sixty-eight billion, six hundred sixteen million, eight hundred seventy thousand, four hundred seventy-seven".