50555550050561 has 2 divisors, whose sum is σ = 50555550050562. Its totient is φ = 50555550050560.

The previous prime is 50555550050539. The next prime is 50555550050563. The reversal of 50555550050561 is 16505005555505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46612025290000 + 3943524760561 = 6827300^2 + 1985831^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50555550050561 is a prime.

Together with 50555550050563, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (50555550050563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25277775025280 + 25277775025281.

It is an arithmetic number, because the mean of its divisors is an integer number (25277775025281).

Almost surely, 2^{50555550050561} is an apocalyptic number.

It is an amenable number.

50555550050561 is a deficient number, since it is larger than the sum of its proper divisors (1).

50555550050561 is an equidigital number, since it uses as much as digits as its factorization.

50555550050561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2343750, while the sum is 47.

The spelling of 50555550050561 in words is "fifty trillion, five hundred fifty-five billion, five hundred fifty million, fifty thousand, five hundred sixty-one".