556420020311 has 2 divisors, whose sum is σ = 556420020312. Its totient is φ = 556420020310.

The previous prime is 556420020281. The next prime is 556420020367. The reversal of 556420020311 is 113020024655.

556420020311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 556420020311 - 2²⁶ = 556352911447 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556420020011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278210010155 + 278210010156.

It is an arithmetic number, because the mean of its divisors is an integer number (278210010156).

Almost surely, 2^556420020311 is an apocalyptic number.

556420020311 is a deficient number, since it is larger than the sum of its proper divisors (1).

556420020311 is an equidigital number, since it uses as much as digits as its factorization.

556420020311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 556420020311 its reverse (113020024655), we get a palindrome (669440044966).

The spelling of 556420020311 in words is "five hundred fifty-six billion, four hundred twenty million, twenty thousand, three hundred eleven".