50020143501 has 4 divisors (see below), whose sum is σ = 66693524672. Its totient is φ = 33346762332.

The previous prime is 50020143499. The next prime is 50020143517. The reversal of 50020143501 is 10534102005.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 50020143501 - 2¹ = 50020143499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50020143571) 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, 8336690581 + ... + 8336690586.

It is an arithmetic number, because the mean of its divisors is an integer number (16673381168).

Almost surely, 2^50020143501 is an apocalyptic number.

It is an amenable number.

50020143501 is a deficient number, since it is larger than the sum of its proper divisors (16673381171).

50020143501 is a wasteful number, since it uses less digits than its factorization.

50020143501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16673381170.

The product of its (nonzero) digits is 600, while the sum is 21.

Adding to 50020143501 its reverse (10534102005), we get a palindrome (60554245506).

The spelling of 50020143501 in words is "fifty billion, twenty million, one hundred forty-three thousand, five hundred one".