1305163156180 has 96 divisors (see below), whose sum is σ = 2960261821440. Its totient is φ = 480506135040.

The previous prime is 1305163156139. The next prime is 1305163156183. The reversal of 1305163156180 is 816513615031.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305163156183) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 361839937 + ... + 361843543.

It is an arithmetic number, because the mean of its divisors is an integer number (30836060640).

Almost surely, 2^{1305163156180} is an apocalyptic number.

1305163156180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1305163156180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1480130910720).

1305163156180 is an abundant number, since it is smaller than the sum of its proper divisors (1655098665260).

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

1305163156180 is a wasteful number, since it uses less digits than its factorization.

1305163156180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7289 (or 7287 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 40.

The spelling of 1305163156180 in words is "one trillion, three hundred five billion, one hundred sixty-three million, one hundred fifty-six thousand, one hundred eighty".