501536313642 has 128 divisors (see below), whose sum is σ = 1258460872704. Its totient is φ = 129713995008.

The previous prime is 501536313637. The next prime is 501536313667. The reversal of 501536313642 is 246313635105.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 501536313642.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 98589223 + ... + 98594309.

It is an arithmetic number, because the mean of its divisors is an integer number (9831725568).

Almost surely, 2^501536313642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 501536313642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (629230436352).

501536313642 is an abundant number, since it is smaller than the sum of its proper divisors (756924559062).

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

501536313642 is a wasteful number, since it uses less digits than its factorization.

501536313642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8572.

The product of its (nonzero) digits is 194400, while the sum is 39.

Adding to 501536313642 its reverse (246313635105), we get a palindrome (747849948747).

The spelling of 501536313642 in words is "five hundred one billion, five hundred thirty-six million, three hundred thirteen thousand, six hundred forty-two".