538890169122 has 54 divisors (see below), whose sum is σ = 1184758145649. Its totient is φ = 177027384240.

The previous prime is 538890169043. The next prime is 538890169163. The reversal of 538890169122 is 221961098835.

538890169122 is a `hidden beast` number, since 5 + 388 + 90 + 169 + 12 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 395627162121 + 143263007001 = 628989^2 + 378501^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=519081.

It is a super-2 number, since 2×538890169122² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 221127288 + ... + 221129724.

Almost surely, 2^538890169122 is an apocalyptic number.

538890169122 is an abundant number, since it is smaller than the sum of its proper divisors (645867976527).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

538890169122 is an frugal number, since it uses more digits than its factorization.

538890169122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5024 (or 2513 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The spelling of 538890169122 in words is "five hundred thirty-eight billion, eight hundred ninety million, one hundred sixty-nine thousand, one hundred twenty-two".