501021205050 has 48 divisors (see below), whose sum is σ = 1276114564512. Its totient is φ = 129994689600.

The previous prime is 501021205037. The next prime is 501021205057. The reversal of 501021205050 is 50502120105.

It is not an unprimeable number, because it can be changed into a prime (501021205057) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 45131496 + ... + 45142595.

It is an arithmetic number, because the mean of its divisors is an integer number (26585720094).

Almost surely, 2^501021205050 is an apocalyptic number.

501021205050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

501021205050 is an abundant number, since it is smaller than the sum of its proper divisors (775093359462).

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

501021205050 is a wasteful number, since it uses less digits than its factorization.

501021205050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90274143 (or 90274138 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 21.

Adding to 501021205050 its reverse (50502120105), we get a palindrome (551523325155).

The spelling of 501021205050 in words is "five hundred one billion, twenty-one million, two hundred five thousand, fifty".