50455543020021 has 12 divisors (see below), whose sum is σ = 72891405126540. Its totient is φ = 33631870378560.

The previous prime is 50455543020019. The next prime is 50455543020031. The reversal of 50455543020021 is 12002034555405.

50455543020021 is a `hidden beast` number, since 50 + 4 + 5 + 554 + 30 + 2 + 0 + 0 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 46582672522500 + 3872870497521 = 6825150^2 + 1967961^2 .

It is not a de Polignac number, because 50455543020021 - 2¹ = 50455543020019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50455543020011) 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, 429796506 + ... + 429913883.

It is an arithmetic number, because the mean of its divisors is an integer number (6074283760545).

Almost surely, 2^{50455543020021} is an apocalyptic number.

It is an amenable number.

50455543020021 is a deficient number, since it is larger than the sum of its proper divisors (22435862106519).

50455543020021 is a wasteful number, since it uses less digits than its factorization.

50455543020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859716916 (or 859716913 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

Adding to 50455543020021 its reverse (12002034555405), we get a palindrome (62457577575426).

The spelling of 50455543020021 in words is "fifty trillion, four hundred fifty-five billion, five hundred forty-three million, twenty thousand, twenty-one".