8461543651 has 16 divisors (see below), whose sum is σ = 9708346368. Its totient is φ = 7303701600.

The previous prime is 8461543537. The next prime is 8461543687. The reversal of 8461543651 is 1563451648.

It is a cyclic number.

It is not a de Polignac number, because 8461543651 - 2⁷ = 8461543523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8461543598 and 8461543607.

It is not an unprimeable number, because it can be changed into a prime (8461543751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216021 + ... + 252166.

It is an arithmetic number, because the mean of its divisors is an integer number (606771648).

Almost surely, 2^8461543651 is an apocalyptic number.

8461543651 is a deficient number, since it is larger than the sum of its proper divisors (1246802717).

8461543651 is a wasteful number, since it uses less digits than its factorization.

8461543651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468282.

The product of its digits is 345600, while the sum is 43.

The square root of 8461543651 is about 91986.6493084730. The cubic root of 8461543651 is about 2037.7451417744.

The spelling of 8461543651 in words is "eight billion, four hundred sixty-one million, five hundred forty-three thousand, six hundred fifty-one".