1318220768468 has 6 divisors (see below), whose sum is σ = 2306886344826. Its totient is φ = 659110384232.

The previous prime is 1318220768453. The next prime is 1318220768479. The reversal of 1318220768468 is 8648670228131.

It can be written as a sum of positive squares in only one way, i.e., 676558891024 + 641661877444 = 822532^2 + 801038^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164777596055 + ... + 164777596062.

It is an arithmetic number, because the mean of its divisors is an integer number (384481057471).

Almost surely, 2^{1318220768468} is an apocalyptic number.

It is an amenable number.

1318220768468 is a deficient number, since it is larger than the sum of its proper divisors (988665576358).

1318220768468 is a wasteful number, since it uses less digits than its factorization.

1318220768468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329555192121 (or 329555192119 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 56.

The spelling of 1318220768468 in words is "one trillion, three hundred eighteen billion, two hundred twenty million, seven hundred sixty-eight thousand, four hundred sixty-eight".