50021345613 has 8 divisors (see below), whose sum is σ = 66697588800. Its totient is φ = 33346333088.

The previous prime is 50021345597. The next prime is 50021345617. The reversal of 50021345613 is 31654312005.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 50021345613 - 2⁴ = 50021345597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50021345617) 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, 208233 + ... + 378686.

It is an arithmetic number, because the mean of its divisors is an integer number (8337198600).

Almost surely, 2^50021345613 is an apocalyptic number.

It is an amenable number.

50021345613 is a deficient number, since it is larger than the sum of its proper divisors (16676243187).

50021345613 is a wasteful number, since it uses less digits than its factorization.

50021345613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615331.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 50021345613 its reverse (31654312005), we get a palindrome (81675657618).

The spelling of 50021345613 in words is "fifty billion, twenty-one million, three hundred forty-five thousand, six hundred thirteen".