6351621136 has 20 divisors (see below), whose sum is σ = 14064304192. Its totient is φ = 2722123296.

The previous prime is 6351621127. The next prime is 6351621197. The reversal of 6351621136 is 6311261536.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28355340 + ... + 28355563.

Almost surely, 2^6351621136 is an apocalyptic number.

It is an amenable number.

6351621136 is an abundant number, since it is smaller than the sum of its proper divisors (7712683056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6351621136 is a wasteful number, since it uses less digits than its factorization.

6351621136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56710918 (or 56710912 counting only the distinct ones).

The product of its digits is 19440, while the sum is 34.

The square root of 6351621136 is about 79697.0585153555. The cubic root of 6351621136 is about 1851.9454709208.

The spelling of 6351621136 in words is "six billion, three hundred fifty-one million, six hundred twenty-one thousand, one hundred thirty-six".