650350438821 has 24 divisors (see below), whose sum is σ = 941192572320. Its totient is φ = 432737663136.

The previous prime is 650350438817. The next prime is 650350438823. The reversal of 650350438821 is 128834053056.

650350438821 is a `hidden beast` number, since 6 + 503 + 5 + 0 + 43 + 88 + 21 = 666.

It is not a de Polignac number, because 650350438821 - 2² = 650350438817 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650350438823) 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, 33394675 + ... + 33414143.

It is an arithmetic number, because the mean of its divisors is an integer number (39216357180).

Almost surely, 2^650350438821 is an apocalyptic number.

It is an amenable number.

650350438821 is a deficient number, since it is larger than the sum of its proper divisors (290842133499).

650350438821 is a wasteful number, since it uses less digits than its factorization.

650350438821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26385 (or 26382 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 650350438821 in words is "six hundred fifty billion, three hundred fifty million, four hundred thirty-eight thousand, eight hundred twenty-one".