8643142465 has 64 divisors (see below), whose sum is σ = 11990246400. Its totient is φ = 5939122176.

The previous prime is 8643142421. The next prime is 8643142477. The reversal of 8643142465 is 5642413468.

It is not a de Polignac number, because 8643142465 - 2²⁷ = 8508924737 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6512632 + ... + 6513958.

It is an arithmetic number, because the mean of its divisors is an integer number (187347600).

Almost surely, 2^8643142465 is an apocalyptic number.

8643142465 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8643142465 is a deficient number, since it is larger than the sum of its proper divisors (3347103935).

8643142465 is a wasteful number, since it uses less digits than its factorization.

8643142465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1514.

The product of its digits is 552960, while the sum is 43.

The square root of 8643142465 is about 92968.5025425278. The cubic root of 8643142465 is about 2052.2198808372.

The spelling of 8643142465 in words is "eight billion, six hundred forty-three million, one hundred forty-two thousand, four hundred sixty-five".