6656479043 has 4 divisors (see below), whose sum is σ = 6836383920. Its totient is φ = 6476574168.

The previous prime is 6656479031. The next prime is 6656479073. The reversal of 6656479043 is 3409746566.

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 6656479043 - 2¹⁰ = 6656478019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6656478982 and 6656479000.

It is not an unprimeable number, because it can be changed into a prime (6656479073) 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, 89952383 + ... + 89952456.

It is an arithmetic number, because the mean of its divisors is an integer number (1709095980).

Almost surely, 2^6656479043 is an apocalyptic number.

6656479043 is a deficient number, since it is larger than the sum of its proper divisors (179904877).

6656479043 is a wasteful number, since it uses less digits than its factorization.

6656479043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179904876.

The product of its (nonzero) digits is 3265920, while the sum is 50.

The square root of 6656479043 is about 81587.2480415904. The cubic root of 6656479043 is about 1881.1128769154.

The spelling of 6656479043 in words is "six billion, six hundred fifty-six million, four hundred seventy-nine thousand, forty-three".