650748738631 has 4 divisors (see below), whose sum is σ = 650768849064. Its totient is φ = 650728628200.

The previous prime is 650748738623. The next prime is 650748738677. The reversal of 650748738631 is 136837847056.

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 650748738631 - 2³ = 650748738623 is a prime.

It is a super-2 number, since 2×650748738631² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650748738931) 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, 10006600 + ... + 10071421.

It is an arithmetic number, because the mean of its divisors is an integer number (162692212266).

Almost surely, 2^650748738631 is an apocalyptic number.

650748738631 is a deficient number, since it is larger than the sum of its proper divisors (20110433).

650748738631 is a wasteful number, since it uses less digits than its factorization.

650748738631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20110432.

The product of its (nonzero) digits is 20321280, while the sum is 58.

The spelling of 650748738631 in words is "six hundred fifty billion, seven hundred forty-eight million, seven hundred thirty-eight thousand, six hundred thirty-one".