1155165752756 has 12 divisors (see below), whose sum is σ = 2021547689700. Its totient is φ = 577580698560.

The previous prime is 1155165752753. The next prime is 1155165752789. The reversal of 1155165752756 is 6572575615511.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 455125636900 + 700040115856 = 674630^2 + 836684^2 .

It is a super-2 number, since 2×1155165752756² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155165752753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1512266 + ... + 2144126.

It is an arithmetic number, because the mean of its divisors is an integer number (168462307475).

Almost surely, 2^{1155165752756} is an apocalyptic number.

It is an amenable number.

1155165752756 is a deficient number, since it is larger than the sum of its proper divisors (866381936944).

1155165752756 is a wasteful number, since it uses less digits than its factorization.

1155165752756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088914 (or 1088912 counting only the distinct ones).

The product of its digits is 11025000, while the sum is 56.

The spelling of 1155165752756 in words is "one trillion, one hundred fifty-five billion, one hundred sixty-five million, seven hundred fifty-two thousand, seven hundred fifty-six".