1318688677601 has 2 divisors, whose sum is σ = 1318688677602. Its totient is φ = 1318688677600.

The previous prime is 1318688677583. The next prime is 1318688677651. The reversal of 1318688677601 is 1067768868131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1124397261376 + 194291416225 = 1060376^2 + 440785^2 .

It is a cyclic number.

It is not a de Polignac number, because 1318688677601 - 2³⁸ = 1043810770657 is a prime.

It is not a weakly prime, because it can be changed into another prime (1318688677651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659344338800 + 659344338801.

It is an arithmetic number, because the mean of its divisors is an integer number (659344338801).

Almost surely, 2^{1318688677601} is an apocalyptic number.

It is an amenable number.

1318688677601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1318688677601 is an equidigital number, since it uses as much as digits as its factorization.

1318688677601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16257024, while the sum is 62.

The spelling of 1318688677601 in words is "one trillion, three hundred eighteen billion, six hundred eighty-eight million, six hundred seventy-seven thousand, six hundred one".