50784838821 has 6 divisors (see below), whose sum is σ = 73355878310. Its totient is φ = 33856559208.

The previous prime is 50784838813. The next prime is 50784838849. The reversal of 50784838821 is 12883848705.

50784838821 is a `hidden beast` number, since 507 + 84 + 8 + 38 + 8 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 26891408196 + 23893430625 = 163986^2 + 154575^2 .

It is not a de Polignac number, because 50784838821 - 2³ = 50784838813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50784838861) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2821379926 + ... + 2821379943.

Almost surely, 2^50784838821 is an apocalyptic number.

It is an amenable number.

50784838821 is a deficient number, since it is larger than the sum of its proper divisors (22571039489).

50784838821 is a wasteful number, since it uses less digits than its factorization.

50784838821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5642759875 (or 5642759872 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 54.

The spelling of 50784838821 in words is "fifty billion, seven hundred eighty-four million, eight hundred thirty-eight thousand, eight hundred twenty-one".