50621217893 has 4 divisors (see below), whose sum is σ = 51314659308. Its totient is φ = 49927776480.

The previous prime is 50621217869. The next prime is 50621217929. The reversal of 50621217893 is 39871212605.

50621217893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 14564145124 + 36057072769 = 120682^2 + 189887^2 .

It is a cyclic number.

It is not a de Polignac number, because 50621217893 - 2⁸ = 50621217637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50621217863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346720598 + ... + 346720743.

It is an arithmetic number, because the mean of its divisors is an integer number (12828664827).

Almost surely, 2^50621217893 is an apocalyptic number.

It is an amenable number.

50621217893 is a deficient number, since it is larger than the sum of its proper divisors (693441415).

50621217893 is an equidigital number, since it uses as much as digits as its factorization.

50621217893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693441414.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 50621217893 in words is "fifty billion, six hundred twenty-one million, two hundred seventeen thousand, eight hundred ninety-three".