2145226109844 has 48 divisors (see below), whose sum is σ = 5264286547968. Its totient is φ = 678599415648.

The previous prime is 2145226109801. The next prime is 2145226109879. The reversal of 2145226109844 is 4489016225412.

It is a junction number, because it is equal to n+sod(n) for n = 2145226109793 and 2145226109802.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 30565572 + ... + 30635675.

It is an arithmetic number, because the mean of its divisors is an integer number (109672636416).

Almost surely, 2^{2145226109844} is an apocalyptic number.

It is an amenable number.

2145226109844 is an abundant number, since it is smaller than the sum of its proper divisors (3119060438124).

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

2145226109844 is a wasteful number, since it uses less digits than its factorization.

2145226109844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61201404 (or 61201402 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 48.

The spelling of 2145226109844 in words is "two trillion, one hundred forty-five billion, two hundred twenty-six million, one hundred nine thousand, eight hundred forty-four".