50851215144 has 48 divisors (see below), whose sum is σ = 137822036820. Its totient is φ = 16938097920.

The previous prime is 50851215143. The next prime is 50851215199. The reversal of 50851215144 is 44151215805.

50851215144 is a `hidden beast` number, since 50 + 8 + 512 + 1 + 51 + 44 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 50687119044 + 164096100 = 225138^2 + 12810^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 50851215099 and 50851215108.

It is not an unprimeable number, because it can be changed into a prime (50851215143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156277 + ... + 355140.

Almost surely, 2^50851215144 is an apocalyptic number.

It is an amenable number.

50851215144 is an abundant number, since it is smaller than the sum of its proper divisors (86970821676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50851215144 is a wasteful number, since it uses less digits than its factorization.

50851215144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512810 (or 512803 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 36.

The spelling of 50851215144 in words is "fifty billion, eight hundred fifty-one million, two hundred fifteen thousand, one hundred forty-four".