50278002778 has 4 divisors (see below), whose sum is σ = 75417004170. Its totient is φ = 25139001388.

The previous prime is 50278002739. The next prime is 50278002793. The reversal of 50278002778 is 87720087205.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 48595116249 + 1682886529 = 220443^2 + 41023^2 .

It is an unprimeable number.

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, 12569500693 + ... + 12569500696.

Almost surely, 2^50278002778 is an apocalyptic number.

50278002778 is a deficient number, since it is larger than the sum of its proper divisors (25139001392).

50278002778 is a wasteful number, since it uses less digits than its factorization.

50278002778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25139001391.

The product of its (nonzero) digits is 439040, while the sum is 46.

The spelling of 50278002778 in words is "fifty billion, two hundred seventy-eight million, two thousand, seven hundred seventy-eight".