2155105122304 has 48 divisors (see below), whose sum is σ = 4323015038160. Its totient is φ = 1074087444480.

The previous prime is 2155105122293. The next prime is 2155105122323. The reversal of 2155105122304 is 4032215015512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1054869 + ... + 2328724.

It is an arithmetic number, because the mean of its divisors is an integer number (90062813295).

Almost surely, 2^{2155105122304} is an apocalyptic number.

It is an amenable number.

2155105122304 is an abundant number, since it is smaller than the sum of its proper divisors (2167909915856).

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

2155105122304 is an equidigital number, since it uses as much as digits as its factorization.

2155105122304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3383926 (or 3383906 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 2155105122304 in words is "two trillion, one hundred fifty-five billion, one hundred five million, one hundred twenty-two thousand, three hundred four".