650851140923 has 4 divisors (see below), whose sum is σ = 659089763040. Its totient is φ = 642612518808.

The previous prime is 650851140889. The next prime is 650851140943. The reversal of 650851140923 is 329041158056.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-650851140923 is a prime.

It is a super-4 number, since 4×650851140923⁴ (a number of 48 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (650851140943) 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, 4119310940 + ... + 4119311097.

It is an arithmetic number, because the mean of its divisors is an integer number (164772440760).

Almost surely, 2^650851140923 is an apocalyptic number.

650851140923 is a deficient number, since it is larger than the sum of its proper divisors (8238622117).

650851140923 is an equidigital number, since it uses as much as digits as its factorization.

650851140923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8238622116.

The product of its (nonzero) digits is 259200, while the sum is 44.

Adding to 650851140923 its reverse (329041158056), we get a palindrome (979892298979).

The spelling of 650851140923 in words is "six hundred fifty billion, eight hundred fifty-one million, one hundred forty thousand, nine hundred twenty-three".