650561525123 has 4 divisors (see below), whose sum is σ = 678846808848. Its totient is φ = 622276241400.

The previous prime is 650561525101. The next prime is 650561525137. The reversal of 650561525123 is 321525165056.

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

It is a cyclic number.

It is not a de Polignac number, because 650561525123 - 2²⁰ = 650560476547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (650561525183) 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, 14142641828 + ... + 14142641873.

It is an arithmetic number, because the mean of its divisors is an integer number (169711702212).

Almost surely, 2^650561525123 is an apocalyptic number.

650561525123 is a deficient number, since it is larger than the sum of its proper divisors (28285283725).

650561525123 is a wasteful number, since it uses less digits than its factorization.

650561525123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28285283724.

The product of its (nonzero) digits is 270000, while the sum is 41.

The spelling of 650561525123 in words is "six hundred fifty billion, five hundred sixty-one million, five hundred twenty-five thousand, one hundred twenty-three".