50170220690 has 64 divisors (see below), whose sum is σ = 94882808160. Its totient is φ = 19074908160.

The previous prime is 50170220647. The next prime is 50170220713. The reversal of 50170220690 is 9602207105.

It can be written as a sum of positive squares in 16 ways, for example, as 12115184761 + 38055035929 = 110069^2 + 195077^2 .

It is a super-2 number, since 2×50170220690² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5424470 + ... + 5433710.

Almost surely, 2^50170220690 is an apocalyptic number.

50170220690 is a deficient number, since it is larger than the sum of its proper divisors (44712587470).

50170220690 is a wasteful number, since it uses less digits than its factorization.

50170220690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9567.

The product of its (nonzero) digits is 7560, while the sum is 32.

Adding to 50170220690 its reverse (9602207105), we get a palindrome (59772427795).

The spelling of 50170220690 in words is "fifty billion, one hundred seventy million, two hundred twenty thousand, six hundred ninety".