50555504738509 has 2 divisors, whose sum is σ = 50555504738510. Its totient is φ = 50555504738508.

The previous prime is 50555504738477. The next prime is 50555504738561. The reversal of 50555504738509 is 90583740555505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34262350094025 + 16293154644484 = 5853405^2 + 4036478^2 .

It is a cyclic number.

It is not a de Polignac number, because 50555504738509 - 2⁵ = 50555504738477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50555504738309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25277752369254 + 25277752369255.

It is an arithmetic number, because the mean of its divisors is an integer number (25277752369255).

Almost surely, 2^{50555504738509} is an apocalyptic number.

It is an amenable number.

50555504738509 is a deficient number, since it is larger than the sum of its proper divisors (1).

50555504738509 is an equidigital number, since it uses as much as digits as its factorization.

50555504738509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94500000, while the sum is 61.

The spelling of 50555504738509 in words is "fifty trillion, five hundred fifty-five billion, five hundred four million, seven hundred thirty-eight thousand, five hundred nine".