256516541002103 has 2 divisors, whose sum is σ = 256516541002104. Its totient is φ = 256516541002102.

The previous prime is 256516541002019. The next prime is 256516541002153. The reversal of 256516541002103 is 301200145615652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256516541002103 - 2¹² = 256516540998007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256516541002153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128258270501051 + 128258270501052.

It is an arithmetic number, because the mean of its divisors is an integer number (128258270501052).

Almost surely, 2^{256516541002103} is an apocalyptic number.

256516541002103 is a deficient number, since it is larger than the sum of its proper divisors (1).

256516541002103 is an equidigital number, since it uses as much as digits as its factorization.

256516541002103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216000, while the sum is 41.

Adding to 256516541002103 its reverse (301200145615652), we get a palindrome (557716686617755).

The spelling of 256516541002103 in words is "two hundred fifty-six trillion, five hundred sixteen billion, five hundred forty-one million, two thousand, one hundred three".