1198655317505 has 16 divisors (see below), whose sum is σ = 1444449283200. Its totient is φ = 954888285312.

The previous prime is 1198655317499. The next prime is 1198655317511. The reversal of 1198655317505 is 5057135568911.

It is an interprime number because it is at equal distance from previous prime (1198655317499) and next prime (1198655317511).

It is a cyclic number.

It is not a de Polignac number, because 1198655317505 - 2⁶ = 1198655317441 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1238012 + ... + 1982418.

It is an arithmetic number, because the mean of its divisors is an integer number (90278080200).

Almost surely, 2^{1198655317505} is an apocalyptic number.

It is an amenable number.

1198655317505 is a deficient number, since it is larger than the sum of its proper divisors (245793965695).

1198655317505 is a wasteful number, since it uses less digits than its factorization.

1198655317505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745768.

The product of its (nonzero) digits is 5670000, while the sum is 56.

The spelling of 1198655317505 in words is "one trillion, one hundred ninety-eight billion, six hundred fifty-five million, three hundred seventeen thousand, five hundred five".