1155827311768 has 8 divisors (see below), whose sum is σ = 2167176209580. Its totient is φ = 577913655880.

The previous prime is 1155827311759. The next prime is 1155827311781. The reversal of 1155827311768 is 8671137285511.

It is a happy number.

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

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 72239206978 + ... + 72239206993.

Almost surely, 2^{1155827311768} is an apocalyptic number.

It is an amenable number.

1155827311768 is a deficient number, since it is larger than the sum of its proper divisors (1011348897812).

1155827311768 is a wasteful number, since it uses less digits than its factorization.

1155827311768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144478413977 (or 144478413973 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 55.

The spelling of 1155827311768 in words is "one trillion, one hundred fifty-five billion, eight hundred twenty-seven million, three hundred eleven thousand, seven hundred sixty-eight".