6456020843 has 4 divisors (see below), whose sum is σ = 6613484808. Its totient is φ = 6298556880.

The previous prime is 6456020833. The next prime is 6456020863. The reversal of 6456020843 is 3480206546.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6456020843 - 2¹⁰ = 6456019819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6456020797 and 6456020806.

It is not an unprimeable number, because it can be changed into a prime (6456020833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78731921 + ... + 78732002.

It is an arithmetic number, because the mean of its divisors is an integer number (1653371202).

Almost surely, 2^6456020843 is an apocalyptic number.

6456020843 is a deficient number, since it is larger than the sum of its proper divisors (157463965).

6456020843 is a wasteful number, since it uses less digits than its factorization.

6456020843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157463964.

The product of its (nonzero) digits is 138240, while the sum is 38.

The square root of 6456020843 is about 80349.3674088353. The cubic root of 6456020843 is about 1862.0370062941.

The spelling of 6456020843 in words is "six billion, four hundred fifty-six million, twenty thousand, eight hundred forty-three".