6556751543 has 2 divisors, whose sum is σ = 6556751544. Its totient is φ = 6556751542.

The previous prime is 6556751489. The next prime is 6556751599. The reversal of 6556751543 is 3451576556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6556751543 - 2¹² = 6556747447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6556754543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3278375771 + 3278375772.

It is an arithmetic number, because the mean of its divisors is an integer number (3278375772).

Almost surely, 2^6556751543 is an apocalyptic number.

6556751543 is a deficient number, since it is larger than the sum of its proper divisors (1).

6556751543 is an equidigital number, since it uses as much as digits as its factorization.

6556751543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1890000, while the sum is 47.

The square root of 6556751543 is about 80973.7707100268. The cubic root of 6556751543 is about 1871.6712772895.

The spelling of 6556751543 in words is "six billion, five hundred fifty-six million, seven hundred fifty-one thousand, five hundred forty-three".