1165266827152 has 80 divisors (see below), whose sum is σ = 2429290229760. Its totient is φ = 539735999616.

The previous prime is 1165266827119. The next prime is 1165266827191. The reversal of 1165266827152 is 2517286625611.

It is a super-2 number, since 2×1165266827152² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1165266827152.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16009113 + ... + 16081735.

It is an arithmetic number, because the mean of its divisors is an integer number (30366127872).

Almost surely, 2^{1165266827152} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1165266827152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1214645114880).

1165266827152 is an abundant number, since it is smaller than the sum of its proper divisors (1264023402608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1165266827152 is a wasteful number, since it uses less digits than its factorization.

1165266827152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73820 (or 73814 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 52.

The spelling of 1165266827152 in words is "one trillion, one hundred sixty-five billion, two hundred sixty-six million, eight hundred twenty-seven thousand, one hundred fifty-two".