501316445234040 has 128 divisors (see below), whose sum is σ = 1516364223528960. Its totient is φ = 132581635329024.

The previous prime is 501316445233999. The next prime is 501316445234053. The reversal of 501316445234040 is 40432544613105.

It is a junction number, because it is equal to n+sod(n) for n = 501316445233983 and 501316445234001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34126684 + ... + 46553876.

It is an arithmetic number, because the mean of its divisors is an integer number (11846595496320).

Almost surely, 2^{501316445234040} 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 501316445234040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (758182111764480).

501316445234040 is an abundant number, since it is smaller than the sum of its proper divisors (1015047778294920).

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

501316445234040 is a wasteful number, since it uses less digits than its factorization.

501316445234040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12429981 (or 12429977 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 42.

Adding to 501316445234040 its reverse (40432544613105), we get a palindrome (541748989847145).

The spelling of 501316445234040 in words is "five hundred one trillion, three hundred sixteen billion, four hundred forty-five million, two hundred thirty-four thousand, forty".