1161500405872 has 80 divisors (see below), whose sum is σ = 2354725850400. Its totient is φ = 554555289600.

The previous prime is 1161500405869. The next prime is 1161500405873. The reversal of 1161500405872 is 2785040051611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161500405873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6180754 + ... + 6365902.

It is an arithmetic number, because the mean of its divisors is an integer number (29434073130).

Almost surely, 2^{1161500405872} is an apocalyptic number.

It is an amenable number.

1161500405872 is an abundant number, since it is smaller than the sum of its proper divisors (1193225444528).

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

1161500405872 is a wasteful number, since it uses less digits than its factorization.

1161500405872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185402 (or 185396 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 40.

The spelling of 1161500405872 in words is "one trillion, one hundred sixty-one billion, five hundred million, four hundred five thousand, eight hundred seventy-two".