144206503728 has 120 divisors (see below), whose sum is σ = 435300139008. Its totient is φ = 41016947328.

The previous prime is 144206503663. The next prime is 144206503801. The reversal of 144206503728 is 827305602441.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 144206503728.

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, 387025 + ... + 661967.

Almost surely, 2^144206503728 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 144206503728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217650069504).

144206503728 is an abundant number, since it is smaller than the sum of its proper divisors (291093635280).

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

144206503728 is a wasteful number, since it uses less digits than its factorization.

144206503728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275191 (or 275178 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 42.

The spelling of 144206503728 in words is "one hundred forty-four billion, two hundred six million, five hundred three thousand, seven hundred twenty-eight".