Adding to 50000005000000 its reverse (50000005), we get a palindrome (50000055000005).
50000005000000 divided by its reverse (50000005) gives a 6-th power (1000000 = 106).
It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.
It is a congruent number.
It is an unprimeable number.
It is a Kaprekar number, because its square (2500000500000025000000000000) can be partitioned into two parts whose sum is 50000005000000.
Almost surely, 250000005000000 is an apocalyptic number.
50000005000000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.
50000005000000 is the 10000000-th triangular number.
50000005000000 is the 3333334-th centered nonagonal number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 50000005000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67649055724224).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
50000005000000 is an frugal number, since it uses more digits than its factorization.
50000005000000 is an evil number, because the sum of its binary digits is even.