50201720505 has 24 divisors (see below), whose sum is σ = 87195031872. Its totient is φ = 26719261344.

The previous prime is 50201720479. The next prime is 50201720507. The reversal of 50201720505 is 50502710205.

It is a happy number.

50201720505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 50201720505 - 2⁶ = 50201720441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50201720507) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1123459 + ... + 1167288.

It is an arithmetic number, because the mean of its divisors is an integer number (3633126328).

Almost surely, 2^50201720505 is an apocalyptic number.

It is an amenable number.

50201720505 is a deficient number, since it is larger than the sum of its proper divisors (36993311367).

50201720505 is a wasteful number, since it uses less digits than its factorization.

50201720505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291245 (or 2291242 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The spelling of 50201720505 in words is "fifty billion, two hundred one million, seven hundred twenty thousand, five hundred five".