1317177638824 has 8 divisors (see below), whose sum is σ = 2469708072810. Its totient is φ = 658588819408.

The previous prime is 1317177638813. The next prime is 1317177638857. The reversal of 1317177638824 is 4288367717131.

It can be written as a sum of positive squares in only one way, i.e., 781473680100 + 535703958724 = 884010^2 + 731918^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82323602419 + ... + 82323602434.

Almost surely, 2^{1317177638824} is an apocalyptic number.

It is an amenable number.

1317177638824 is a deficient number, since it is larger than the sum of its proper divisors (1152530433986).

1317177638824 is a wasteful number, since it uses less digits than its factorization.

1317177638824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164647204859 (or 164647204855 counting only the distinct ones).

The product of its digits is 9483264, while the sum is 58.

The spelling of 1317177638824 in words is "one trillion, three hundred seventeen billion, one hundred seventy-seven million, six hundred thirty-eight thousand, eight hundred twenty-four".