2145444305144 has 96 divisors (see below), whose sum is σ = 4845995320320. Its totient is φ = 887271989184.

The previous prime is 2145444305083. The next prime is 2145444305159. The reversal of 2145444305144 is 4415034445412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 632297 + ... + 2165799.

It is an arithmetic number, because the mean of its divisors is an integer number (50479117920).

Almost surely, 2^{2145444305144} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2145444305144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2422997660160).

2145444305144 is an abundant number, since it is smaller than the sum of its proper divisors (2700551015176).

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

2145444305144 is a wasteful number, since it uses less digits than its factorization.

2145444305144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533649 (or 1533638 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 41.

The spelling of 2145444305144 in words is "two trillion, one hundred forty-five billion, four hundred forty-four million, three hundred five thousand, one hundred forty-four".