50278778903 has 2 divisors, whose sum is σ = 50278778904. Its totient is φ = 50278778902.

The previous prime is 50278778873. The next prime is 50278778917. The reversal of 50278778903 is 30987787205.

50278778903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 50278778903 - 2¹² = 50278774807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50278778923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25139389451 + 25139389452.

It is an arithmetic number, because the mean of its divisors is an integer number (25139389452).

Almost surely, 2^50278778903 is an apocalyptic number.

50278778903 is a deficient number, since it is larger than the sum of its proper divisors (1).

50278778903 is an equidigital number, since it uses as much as digits as its factorization.

50278778903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5927040, while the sum is 56.

The spelling of 50278778903 in words is "fifty billion, two hundred seventy-eight million, seven hundred seventy-eight thousand, nine hundred three".