6355538568851 has 2 divisors, whose sum is σ = 6355538568852. Its totient is φ = 6355538568850.

The previous prime is 6355538568829. The next prime is 6355538568871. The reversal of 6355538568851 is 1588658355536.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6355538568851 is a prime.

It is not a weakly prime, because it can be changed into another prime (6355538568871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3177769284425 + 3177769284426.

It is an arithmetic number, because the mean of its divisors is an integer number (3177769284426).

Almost surely, 2^{6355538568851} is an apocalyptic number.

6355538568851 is a deficient number, since it is larger than the sum of its proper divisors (1).

6355538568851 is an equidigital number, since it uses as much as digits as its factorization.

6355538568851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518400000, while the sum is 68.

The spelling of 6355538568851 in words is "six trillion, three hundred fifty-five billion, five hundred thirty-eight million, five hundred sixty-eight thousand, eight hundred fifty-one".