2861605605155 has 16 divisors (see below), whose sum is σ = 3746227622400. Its totient is φ = 2081097857760.

The previous prime is 2861605605151. The next prime is 2861605605163. The reversal of 2861605605155 is 5515065061682.

2861605605155 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2861605605155 - 2² = 2861605605151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2861605605151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 809516 + ... + 2525574.

It is an arithmetic number, because the mean of its divisors is an integer number (234139226400).

Almost surely, 2^{2861605605155} is an apocalyptic number.

2861605605155 is a deficient number, since it is larger than the sum of its proper divisors (884622017245).

2861605605155 is a wasteful number, since it uses less digits than its factorization.

2861605605155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746394.

The product of its (nonzero) digits is 2160000, while the sum is 50.

The spelling of 2861605605155 in words is "two trillion, eight hundred sixty-one billion, six hundred five million, six hundred five thousand, one hundred fifty-five".