6343420081 has 4 divisors (see below), whose sum is σ = 6343974000. Its totient is φ = 6342866164.

The previous prime is 6343420049. The next prime is 6343420121. The reversal of 6343420081 is 1800243436.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6343420081 - 2⁵ = 6343420049 is a prime.

It is a super-2 number, since 2×6343420081² = 80477956648068093122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6343120081) 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, 259411 + ... + 282808.

It is an arithmetic number, because the mean of its divisors is an integer number (1585993500).

Almost surely, 2^6343420081 is an apocalyptic number.

It is an amenable number.

6343420081 is a deficient number, since it is larger than the sum of its proper divisors (553919).

6343420081 is a wasteful number, since it uses less digits than its factorization.

6343420081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553918.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 6343420081 is about 79645.5904680228. The cubic root of 6343420081 is about 1851.1480656716.

The spelling of 6343420081 in words is "six billion, three hundred forty-three million, four hundred twenty thousand, eighty-one".