650720942533 has 4 divisors (see below), whose sum is σ = 650731991980. Its totient is φ = 650709893088.

The previous prime is 650720942513. The next prime is 650720942563. The reversal of 650720942533 is 335249027056.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 527973717924 + 122747224609 = 726618^2 + 350353^2 .

It is a cyclic number.

It is not a de Polignac number, because 650720942533 - 2³⁷ = 513281989061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650720942513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5435910 + ... + 5554327.

It is an arithmetic number, because the mean of its divisors is an integer number (162682997995).

Almost surely, 2^650720942533 is an apocalyptic number.

It is an amenable number.

650720942533 is a deficient number, since it is larger than the sum of its proper divisors (11049447).

650720942533 is a wasteful number, since it uses less digits than its factorization.

650720942533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11049446.

The product of its (nonzero) digits is 1360800, while the sum is 46.

Adding to 650720942533 its reverse (335249027056), we get a palindrome (985969969589).

The spelling of 650720942533 in words is "six hundred fifty billion, seven hundred twenty million, nine hundred forty-two thousand, five hundred thirty-three".