8426812500 has 252 divisors, whose sum is σ = 27129027744. Its totient is φ = 2205000000.

The previous prime is 8426812447. The next prime is 8426812523. The reversal of 8426812500 is 52186248.

8426812500 is a `hidden beast` number, since 84 + 2 + 68 + 12 + 500 = 666.

It is a super-2 number, since 2×8426812500² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 39937395 + ... + 39937605.

It is an arithmetic number, because the mean of its divisors is an integer number (107654872).

Almost surely, 2^8426812500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8426812500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13564513872).

8426812500 is an abundant number, since it is smaller than the sum of its proper divisors (18702215244).

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

8426812500 is a wasteful number, since it uses less digits than its factorization.

8426812500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322 (or 292 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 8426812500 is about 91797.6715390973. The cubic root of 8426812500 is about 2034.9532836843.

Adding to 8426812500 its reverse (52186248), we get a palindrome (8478998748).

The spelling of 8426812500 in words is "eight billion, four hundred twenty-six million, eight hundred twelve thousand, five hundred".