50728267517 has 2 divisors, whose sum is σ = 50728267518. Its totient is φ = 50728267516.

The previous prime is 50728267501. The next prime is 50728267531. The reversal of 50728267517 is 71576282705.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47379793561 + 3348473956 = 217669^2 + 57866^2 .

It is a cyclic number.

It is not a de Polignac number, because 50728267517 - 2⁴ = 50728267501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50728267217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25364133758 + 25364133759.

It is an arithmetic number, because the mean of its divisors is an integer number (25364133759).

Almost surely, 2^50728267517 is an apocalyptic number.

It is an amenable number.

50728267517 is a deficient number, since it is larger than the sum of its proper divisors (1).

50728267517 is an equidigital number, since it uses as much as digits as its factorization.

50728267517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1646400, while the sum is 50.

The spelling of 50728267517 in words is "fifty billion, seven hundred twenty-eight million, two hundred sixty-seven thousand, five hundred seventeen".