144187722018 has 18 divisors (see below), whose sum is σ = 312410221617. Its totient is φ = 48062037000.

The previous prime is 144187721971. The next prime is 144187722037. The reversal of 144187722018 is 810227781441.

144187722018 is a `hidden beast` number, since 1 + 4 + 418 + 7 + 7 + 220 + 1 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 81706220649 + 62481501369 = 285843^2 + 249963^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=268503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1566268 + ... + 1655768.

Almost surely, 2^144187722018 is an apocalyptic number.

144187722018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

144187722018 is an abundant number, since it is smaller than the sum of its proper divisors (168222499599).

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

144187722018 is an frugal number, since it uses more digits than its factorization.

144187722018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179010 (or 89506 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 45.

The spelling of 144187722018 in words is "one hundred forty-four billion, one hundred eighty-seven million, seven hundred twenty-two thousand, eighteen".