6421695316 has 12 divisors (see below), whose sum is σ = 11829438880. Its totient is φ = 3041855640.

The previous prime is 6421695307. The next prime is 6421695331. The reversal of 6421695316 is 6135961246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42247920 + ... + 42248071.

Almost surely, 2^6421695316 is an apocalyptic number.

It is an amenable number.

6421695316 is a deficient number, since it is larger than the sum of its proper divisors (5407743564).

6421695316 is a wasteful number, since it uses less digits than its factorization.

6421695316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84496014 (or 84496012 counting only the distinct ones).

The product of its digits is 233280, while the sum is 43.

The square root of 6421695316 is about 80135.4810056070. The cubic root of 6421695316 is about 1858.7310993212.

The spelling of 6421695316 in words is "six billion, four hundred twenty-one million, six hundred ninety-five thousand, three hundred sixteen".