8461787009 has 64 divisors (see below), whose sum is σ = 10861724160. Its totient is φ = 6496174080.

The previous prime is 8461786999. The next prime is 8461787083. The reversal of 8461787009 is 9007871648.

It is a cyclic number.

It is not a de Polignac number, because 8461787009 - 2¹² = 8461782913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8461787309) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3958589 + ... + 3960725.

It is an arithmetic number, because the mean of its divisors is an integer number (169714440).

Almost surely, 2^8461787009 is an apocalyptic number.

It is an amenable number.

8461787009 is a deficient number, since it is larger than the sum of its proper divisors (2399937151).

8461787009 is a wasteful number, since it uses less digits than its factorization.

8461787009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2250.

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 8461787009 is about 91987.9720887465. The cubic root of 8461787009 is about 2037.7646770920.

The spelling of 8461787009 in words is "eight billion, four hundred sixty-one million, seven hundred eighty-seven thousand, nine".