2145205152244 has 192 divisors, whose sum is σ = 5006756966400. Its totient is φ = 779381222400.

The previous prime is 2145205152241. The next prime is 2145205152271. The reversal of 2145205152244 is 4422515025412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145205152241) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 737435862 + ... + 737438770.

It is an arithmetic number, because the mean of its divisors is an integer number (26076859200).

Almost surely, 2^{2145205152244} 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 2145205152244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2503378483200).

2145205152244 is an abundant number, since it is smaller than the sum of its proper divisors (2861551814156).

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

2145205152244 is a wasteful number, since it uses less digits than its factorization.

2145205152244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5534 (or 5532 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 37.

The spelling of 2145205152244 in words is "two trillion, one hundred forty-five billion, two hundred five million, one hundred fifty-two thousand, two hundred forty-four".