50135653261 has 2 divisors, whose sum is σ = 50135653262. Its totient is φ = 50135653260.

The previous prime is 50135653259. The next prime is 50135653277. The reversal of 50135653261 is 16235653105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28525183236 + 21610470025 = 168894^2 + 147005^2 .

It is a cyclic number.

It is not a de Polignac number, because 50135653261 - 2¹ = 50135653259 is a prime.

Together with 50135653259, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 50135653261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50135657261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25067826630 + 25067826631.

It is an arithmetic number, because the mean of its divisors is an integer number (25067826631).

Almost surely, 2^50135653261 is an apocalyptic number.

It is an amenable number.

50135653261 is a deficient number, since it is larger than the sum of its proper divisors (1).

50135653261 is an equidigital number, since it uses as much as digits as its factorization.

50135653261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81000, while the sum is 37.

The spelling of 50135653261 in words is "fifty billion, one hundred thirty-five million, six hundred fifty-three thousand, two hundred sixty-one".