505445620650 has 192 divisors, whose sum is σ = 1350455279616. Its totient is φ = 124778016000.

The previous prime is 505445620643. The next prime is 505445620663. The reversal of 505445620650 is 56026544505.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 24370785 + ... + 24391515.

It is an arithmetic number, because the mean of its divisors is an integer number (7033621248).

Almost surely, 2^505445620650 is an apocalyptic number.

505445620650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 505445620650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (675227639808).

505445620650 is an abundant number, since it is smaller than the sum of its proper divisors (845009658966).

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

505445620650 is a wasteful number, since it uses less digits than its factorization.

505445620650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20997 (or 20992 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 42.

The spelling of 505445620650 in words is "five hundred five billion, four hundred forty-five million, six hundred twenty thousand, six hundred fifty".