6421314650 has 12 divisors (see below), whose sum is σ = 11943645342. Its totient is φ = 2568525840.

The previous prime is 6421314649. The next prime is 6421314661. The reversal of 6421314650 is 564131246.

It can be written as a sum of positive squares in 3 ways, for example, as 3558957649 + 2862357001 = 59657^2 + 53501^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64213097 + ... + 64213196.

Almost surely, 2^6421314650 is an apocalyptic number.

6421314650 is a deficient number, since it is larger than the sum of its proper divisors (5522330692).

6421314650 is a wasteful number, since it uses less digits than its factorization.

6421314650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128426305 (or 128426300 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 6421314650 is about 80133.1058302372. The cubic root of 6421314650 is about 1858.6943712362.

Adding to 6421314650 its reverse (564131246), we get a palindrome (6985445896).

The spelling of 6421314650 in words is "six billion, four hundred twenty-one million, three hundred fourteen thousand, six hundred fifty".