12055515555140 has 24 divisors (see below), whose sum is σ = 25316864303640. Its totient is φ = 4822152576768.

The previous prime is 12055515555137. The next prime is 12055515555179. The reversal of 12055515555140 is 4155551555021.

It can be written as a sum of positive squares in 4 ways, for example, as 151925330176 + 11903590224964 = 389776^2 + 3450158^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12055515555091 and 12055515555100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1484687 + ... + 5129846.

It is an arithmetic number, because the mean of its divisors is an integer number (1054869345985).

Almost surely, 2^{12055515555140} is an apocalyptic number.

12055515555140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12055515555140 is an abundant number, since it is smaller than the sum of its proper divisors (13261348748500).

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

12055515555140 is a wasteful number, since it uses less digits than its factorization.

12055515555140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6705671 (or 6705669 counting only the distinct ones).

The product of its (nonzero) digits is 625000, while the sum is 44.

The spelling of 12055515555140 in words is "twelve trillion, fifty-five billion, five hundred fifteen million, five hundred fifty-five thousand, one hundred forty".