50687006891 has 2 divisors, whose sum is σ = 50687006892. Its totient is φ = 50687006890.

The previous prime is 50687006873. The next prime is 50687006917. The reversal of 50687006891 is 19860078605.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50687006891 - 2¹⁰ = 50687005867 is a prime.

It is not a weakly prime, because it can be changed into another prime (50687006801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25343503445 + 25343503446.

It is an arithmetic number, because the mean of its divisors is an integer number (25343503446).

Almost surely, 2^50687006891 is an apocalyptic number.

50687006891 is a deficient number, since it is larger than the sum of its proper divisors (1).

50687006891 is an equidigital number, since it uses as much as digits as its factorization.

50687006891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 50687006891 in words is "fifty billion, six hundred eighty-seven million, six thousand, eight hundred ninety-one".