501740142540444 has 18 divisors (see below), whose sum is σ = 1268287582532880. Its totient is φ = 167246714180136.

The previous prime is 501740142540437. The next prime is 501740142540473. The reversal of 501740142540444 is 444045241047105.

501740142540444 is a `hidden beast` number, since 5 + 0 + 17 + 4 + 0 + 142 + 54 + 0 + 444 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 501740142540444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6968613090804 + ... + 6968613090875.

Almost surely, 2^{501740142540444} is an apocalyptic number.

It is an amenable number.

501740142540444 is an abundant number, since it is smaller than the sum of its proper divisors (766547439992436).

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

501740142540444 is a wasteful number, since it uses less digits than its factorization.

501740142540444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13937226181689 (or 13937226181684 counting only the distinct ones).

The product of its (nonzero) digits is 1433600, while the sum is 45.

Adding to 501740142540444 its reverse (444045241047105), we get a palindrome (945785383587549).

The spelling of 501740142540444 in words is "five hundred one trillion, seven hundred forty billion, one hundred forty-two million, five hundred forty thousand, four hundred forty-four".