50642665040 has 40 divisors (see below), whose sum is σ = 128448216288. Its totient is φ = 18415514240.

The previous prime is 50642665039. The next prime is 50642665043. The reversal of 50642665040 is 4056624605.

50642665040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 50642664985 and 50642665003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50642665043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28773362 + ... + 28775121.

Almost surely, 2^50642665040 is an apocalyptic number.

It is an amenable number.

50642665040 is an abundant number, since it is smaller than the sum of its proper divisors (77805551248).

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

50642665040 is a wasteful number, since it uses less digits than its factorization.

50642665040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57548507 (or 57548501 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 50642665040 in words is "fifty billion, six hundred forty-two million, six hundred sixty-five thousand, forty".