144405503220 has 192 divisors, whose sum is σ = 465820637184. Its totient is φ = 33081607680.

The previous prime is 144405503201. The next prime is 144405503251. The reversal of 144405503220 is 22305504441.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1202634 + ... + 1317246.

It is an arithmetic number, because the mean of its divisors is an integer number (2426149152).

Almost surely, 2^144405503220 is an apocalyptic number.

144405503220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144405503220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232910318592).

144405503220 is an abundant number, since it is smaller than the sum of its proper divisors (321415133964).

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

144405503220 is a wasteful number, since it uses less digits than its factorization.

144405503220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114742 (or 114740 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The spelling of 144405503220 in words is "one hundred forty-four billion, four hundred five million, five hundred three thousand, two hundred twenty".