650793436821 has 32 divisors (see below), whose sum is σ = 1051842614400. Its totient is φ = 394399549440.

The previous prime is 650793436819. The next prime is 650793436829. The reversal of 650793436821 is 128634397056.

650793436821 is a `hidden beast` number, since 6 + 507 + 93 + 43 + 6 + 8 + 2 + 1 = 666.

It is not a de Polignac number, because 650793436821 - 2¹ = 650793436819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650793436829) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7105365 + ... + 7196373.

It is an arithmetic number, because the mean of its divisors is an integer number (32870081700).

It is a 1-persistent number, because it is pandigital, but 2⋅650793436821 = 1301586873642 is not.

Almost surely, 2^650793436821 is an apocalyptic number.

It is an amenable number.

650793436821 is a deficient number, since it is larger than the sum of its proper divisors (401049177579).

650793436821 is a wasteful number, since it uses less digits than its factorization.

650793436821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115106 (or 115100 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 650793436821 in words is "six hundred fifty billion, seven hundred ninety-three million, four hundred thirty-six thousand, eight hundred twenty-one".