6555957856783 has 2 divisors, whose sum is σ = 6555957856784. Its totient is φ = 6555957856782.

The previous prime is 6555957856663. The next prime is 6555957856793. The reversal of 6555957856783 is 3876587595556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6555957856783 - 2¹³ = 6555957848591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6555957856793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3277978928391 + 3277978928392.

It is an arithmetic number, because the mean of its divisors is an integer number (3277978928392).

Almost surely, 2^{6555957856783} is an apocalyptic number.

6555957856783 is a deficient number, since it is larger than the sum of its proper divisors (1).

6555957856783 is an equidigital number, since it uses as much as digits as its factorization.

6555957856783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9525600000, while the sum is 79.

The spelling of 6555957856783 in words is "six trillion, five hundred fifty-five billion, nine hundred fifty-seven million, eight hundred fifty-six thousand, seven hundred eighty-three".