505665226650 has 48 divisors (see below), whose sum is σ = 1254995282304. Its totient is φ = 134742391680.

The previous prime is 505665226613. The next prime is 505665226657. The reversal of 505665226650 is 56622566505.

It is a self number, because there is not a number n which added to its sum of digits gives 505665226650.

It is not an unprimeable number, because it can be changed into a prime (505665226657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1071147 + ... + 1469246.

It is an arithmetic number, because the mean of its divisors is an integer number (26145735048).

Almost surely, 2^505665226650 is an apocalyptic number.

505665226650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

505665226650 is an abundant number, since it is smaller than the sum of its proper divisors (749330055654).

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

505665226650 is a wasteful number, since it uses less digits than its factorization.

505665226650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541735 (or 2541730 counting only the distinct ones).

The product of its (nonzero) digits is 3240000, while the sum is 48.

The spelling of 505665226650 in words is "five hundred five billion, six hundred sixty-five million, two hundred twenty-six thousand, six hundred fifty".