9645456655 has 4 divisors (see below), whose sum is σ = 11574547992. Its totient is φ = 7716365320.

The previous prime is 9645456649. The next prime is 9645456679. The reversal of 9645456655 is 5566545469.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 9645456655 - 2²⁹ = 9108585743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9645456596 and 9645456605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 964545661 + ... + 964545670.

It is an arithmetic number, because the mean of its divisors is an integer number (2893636998).

Almost surely, 2^9645456655 is an apocalyptic number.

9645456655 is a deficient number, since it is larger than the sum of its proper divisors (1929091337).

9645456655 is a wasteful number, since it uses less digits than its factorization.

9645456655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1929091336.

The product of its digits is 19440000, while the sum is 55.

The square root of 9645456655 is about 98211.2857822358. The cubic root of 9645456655 is about 2128.6663648621. Note that the first 3 decimals are identical.

The spelling of 9645456655 in words is "nine billion, six hundred forty-five million, four hundred fifty-six thousand, six hundred fifty-five".