1217320063552 has 14 divisors (see below), whose sum is σ = 2415619501238. Its totient is φ = 608660031744.

The previous prime is 1217320063549. The next prime is 1217320063567. The reversal of 1217320063552 is 2553600237121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 863085592576 + 354234470976 = 929024^2 + 595176^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9510312933 + ... + 9510313060.

Almost surely, 2^{1217320063552} is an apocalyptic number.

It is an amenable number.

1217320063552 is a deficient number, since it is larger than the sum of its proper divisors (1198299437686).

1217320063552 is an equidigital number, since it uses as much as digits as its factorization.

1217320063552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19020626005 (or 19020625995 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 37.

The spelling of 1217320063552 in words is "one trillion, two hundred seventeen billion, three hundred twenty million, sixty-three thousand, five hundred fifty-two".