50912421905 has 4 divisors (see below), whose sum is σ = 61094906292. Its totient is φ = 40729937520.

The previous prime is 50912421877. The next prime is 50912421941.

50912421905 is nontrivially palindromic in base 10.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7553521921 + 43358899984 = 86911^2 + 208228^2 .

It is not a de Polignac number, because 50912421905 - 2¹⁴ = 50912405521 is a prime.

It is a Duffinian number.

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 in 3 ways as a sum of consecutive naturals, for example, 5091242186 + ... + 5091242195.

It is an arithmetic number, because the mean of its divisors is an integer number (15273726573).

Almost surely, 2^50912421905 is an apocalyptic number.

It is an amenable number.

50912421905 is a deficient number, since it is larger than the sum of its proper divisors (10182484387).

50912421905 is a wasteful number, since it uses less digits than its factorization.

50912421905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10182484386.

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 50912421905 in words is "fifty billion, nine hundred twelve million, four hundred twenty-one thousand, nine hundred five".