1161155265028 has 48 divisors (see below), whose sum is σ = 2347311657600. Its totient is φ = 496716295680.

The previous prime is 1161155265007. The next prime is 1161155265077. The reversal of 1161155265028 is 8205625511611.

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 in 15 ways as a sum of consecutive naturals, for example, 12692113 + ... + 12783271.

It is an arithmetic number, because the mean of its divisors is an integer number (48902326200).

Almost surely, 2^{1161155265028} is an apocalyptic number.

It is an amenable number.

1161155265028 is an abundant number, since it is smaller than the sum of its proper divisors (1186156392572).

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

1161155265028 is a wasteful number, since it uses less digits than its factorization.

1161155265028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108220 (or 108218 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 43.

The spelling of 1161155265028 in words is "one trillion, one hundred sixty-one billion, one hundred fifty-five million, two hundred sixty-five thousand, twenty-eight".