650505122440 has 32 divisors (see below), whose sum is σ = 1494777732480. Its totient is φ = 254665834432.

The previous prime is 650505122431. The next prime is 650505122483. The reversal of 650505122440 is 44221505056.

It is a junction number, because it is equal to n+sod(n) for n = 650505122396 and 650505122405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173004802 + ... + 173008561.

It is an arithmetic number, because the mean of its divisors is an integer number (46711804140).

Almost surely, 2^650505122440 is an apocalyptic number.

It is an amenable number.

650505122440 is an abundant number, since it is smaller than the sum of its proper divisors (844272610040).

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

650505122440 is a wasteful number, since it uses less digits than its factorization.

650505122440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346013421 (or 346013417 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 650505122440 its reverse (44221505056), we get a palindrome (694726627496).

The spelling of 650505122440 in words is "six hundred fifty billion, five hundred five million, one hundred twenty-two thousand, four hundred forty".