1155512572112 has 20 divisors (see below), whose sum is σ = 2269474180740. Its totient is φ = 569841815808.

The previous prime is 1155512572099. The next prime is 1155512572171. The reversal of 1155512572112 is 2112752155511.

It can be written as a sum of positive squares in 2 ways, for example, as 492304302736 + 663208269376 = 701644^2 + 814376^2 .

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 494653187 + ... + 494655522.

It is an arithmetic number, because the mean of its divisors is an integer number (113473709037).

Almost surely, 2^{1155512572112} is an apocalyptic number.

It is an amenable number.

1155512572112 is a deficient number, since it is larger than the sum of its proper divisors (1113961608628).

1155512572112 is an equidigital number, since it uses as much as digits as its factorization.

1155512572112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989308790 (or 989308784 counting only the distinct ones).

The product of its digits is 35000, while the sum is 38.

The spelling of 1155512572112 in words is "one trillion, one hundred fifty-five billion, five hundred twelve million, five hundred seventy-two thousand, one hundred twelve".