50518125551 has 2 divisors, whose sum is σ = 50518125552. Its totient is φ = 50518125550.

The previous prime is 50518125503. The next prime is 50518125569. The reversal of 50518125551 is 15552181505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 50518125551 - 2²⁶ = 50451016687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50518125571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25259062775 + 25259062776.

It is an arithmetic number, because the mean of its divisors is an integer number (25259062776).

Almost surely, 2^50518125551 is an apocalyptic number.

50518125551 is a deficient number, since it is larger than the sum of its proper divisors (1).

50518125551 is an equidigital number, since it uses as much as digits as its factorization.

50518125551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50000, while the sum is 38.

The spelling of 50518125551 in words is "fifty billion, five hundred eighteen million, one hundred twenty-five thousand, five hundred fifty-one".