650623613513 has 4 divisors (see below), whose sum is σ = 651116138388. Its totient is φ = 650131088640.

The previous prime is 650623613473. The next prime is 650623613597. The reversal of 650623613513 is 315316326056.

650623613513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 611198731264 + 39424882249 = 781792^2 + 198557^2 .

It is a cyclic number.

It is not a de Polignac number, because 650623613513 - 2⁸ = 650623613257 is a prime.

It is a super-2 number, since 2×650623613513² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (650623663513) 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, 246260456 + ... + 246263097.

It is an arithmetic number, because the mean of its divisors is an integer number (162779034597).

Almost surely, 2^650623613513 is an apocalyptic number.

It is an amenable number.

650623613513 is a deficient number, since it is larger than the sum of its proper divisors (492524875).

650623613513 is a wasteful number, since it uses less digits than its factorization.

650623613513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492524874.

The product of its (nonzero) digits is 291600, while the sum is 41.

Adding to 650623613513 its reverse (315316326056), we get a palindrome (965939939569).

The spelling of 650623613513 in words is "six hundred fifty billion, six hundred twenty-three million, six hundred thirteen thousand, five hundred thirteen".