1155811361968 has 40 divisors (see below), whose sum is σ = 2266799790528. Its totient is φ = 570833443392.

The previous prime is 1155811361933. The next prime is 1155811361977. The reversal of 1155811361968 is 8691631185511.

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 in 7 ways as a sum of consecutive naturals, for example, 7073155 + ... + 7234717.

Almost surely, 2^{1155811361968} is an apocalyptic number.

It is an amenable number.

1155811361968 is a deficient number, since it is larger than the sum of its proper divisors (1110988428560).

1155811361968 is a wasteful number, since it uses less digits than its factorization.

1155811361968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167041 (or 167035 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 55.

The spelling of 1155811361968 in words is "one trillion, one hundred fifty-five billion, eight hundred eleven million, three hundred sixty-one thousand, nine hundred sixty-eight".