650635664213 has 4 divisors (see below), whose sum is σ = 684879646560. Its totient is φ = 616391681868.

The previous prime is 650635664201. The next prime is 650635664267. The reversal of 650635664213 is 312466536056.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 650635664213 - 2²⁰ = 650634615637 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 (650635664113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17121991145 + ... + 17121991182.

It is an arithmetic number, because the mean of its divisors is an integer number (171219911640).

Almost surely, 2^650635664213 is an apocalyptic number.

It is an amenable number.

650635664213 is a deficient number, since it is larger than the sum of its proper divisors (34243982347).

650635664213 is a wasteful number, since it uses less digits than its factorization.

650635664213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34243982346.

The product of its (nonzero) digits is 2332800, while the sum is 47.

The spelling of 650635664213 in words is "six hundred fifty billion, six hundred thirty-five million, six hundred sixty-four thousand, two hundred thirteen".