1155268770866 has 16 divisors (see below), whose sum is σ = 1982348726400. Its totient is φ = 494643193440.

The previous prime is 1155268770863. The next prime is 1155268770871. The reversal of 1155268770866 is 6680778625511.

It is a junction number, because it is equal to n+sod(n) for n = 1155268770799 and 1155268770808.

It is not an unprimeable number, because it can be changed into a prime (1155268770863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39317630 + ... + 39347001.

It is an arithmetic number, because the mean of its divisors is an integer number (123896795400).

Almost surely, 2^{1155268770866} is an apocalyptic number.

1155268770866 is a deficient number, since it is larger than the sum of its proper divisors (827079955534).

1155268770866 is a wasteful number, since it uses less digits than its factorization.

1155268770866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78665689.

The product of its (nonzero) digits is 33868800, while the sum is 62.

The spelling of 1155268770866 in words is "one trillion, one hundred fifty-five billion, two hundred sixty-eight million, seven hundred seventy thousand, eight hundred sixty-six".