651233640322 has 8 divisors (see below), whose sum is σ = 976865725836. Its totient is φ = 325611731712.

The previous prime is 651233640263. The next prime is 651233640329. The reversal of 651233640322 is 223046332156.

It can be written as a sum of positive squares in 2 ways, for example, as 612915186321 + 38318454001 = 782889^2 + 195751^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (651233640329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2382183 + ... + 2641450.

Almost surely, 2^651233640322 is an apocalyptic number.

651233640322 is a deficient number, since it is larger than the sum of its proper divisors (325632085514).

651233640322 is a wasteful number, since it uses less digits than its factorization.

651233640322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5088452.

The product of its (nonzero) digits is 155520, while the sum is 37.

Adding to 651233640322 its reverse (223046332156), we get a palindrome (874279972478).

The spelling of 651233640322 in words is "six hundred fifty-one billion, two hundred thirty-three million, six hundred forty thousand, three hundred twenty-two".