6351043993 has 8 divisors (see below), whose sum is σ = 7508623680. Its totient is φ = 5256036240.

The previous prime is 6351043973. The next prime is 6351044009. The reversal of 6351043993 is 3993401536.

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

It is a de Polignac number, because none of the positive numbers 2^k-6351043993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6351043903) 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 7 ways as a sum of consecutive naturals, for example, 15642763 + ... + 15643168.

It is an arithmetic number, because the mean of its divisors is an integer number (938577960).

Almost surely, 2^6351043993 is an apocalyptic number.

It is an amenable number.

6351043993 is a deficient number, since it is larger than the sum of its proper divisors (1157579687).

6351043993 is a wasteful number, since it uses less digits than its factorization.

6351043993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31285967.

The product of its (nonzero) digits is 262440, while the sum is 43.

The square root of 6351043993 is about 79693.4375780089. The cubic root of 6351043993 is about 1851.8893765938.

The spelling of 6351043993 in words is "six billion, three hundred fifty-one million, forty-three thousand, nine hundred ninety-three".