6456642466545 has 48 divisors (see below), whose sum is σ = 11403148088592. Its totient is φ = 3378429749760.

The previous prime is 6456642466531. The next prime is 6456642466559. The reversal of 6456642466545 is 5456642466546.

6456642466545 is a `hidden beast` number, since 6 + 4 + 5 + 6 + 6 + 4 + 24 + 66 + 545 = 666.

It is an interprime number because it is at equal distance from previous prime (6456642466531) and next prime (6456642466559).

It can be written as a sum of positive squares in 8 ways, for example, as 446726477376 + 6009915989169 = 668376^2 + 2451513^2 .

It is not a de Polignac number, because 6456642466545 - 2⁵ = 6456642466513 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 83142835 + ... + 83220455.

It is an arithmetic number, because the mean of its divisors is an integer number (237565585179).

Almost surely, 2^{6456642466545} is an apocalyptic number.

It is an amenable number.

6456642466545 is a deficient number, since it is larger than the sum of its proper divisors (4946505622047).

6456642466545 is a wasteful number, since it uses less digits than its factorization.

6456642466545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112562 (or 112559 counting only the distinct ones).

The product of its digits is 497664000, while the sum is 63.

Subtracting from 6456642466545 its reverse (5456642466546), we obtain a palindrome (999999999999).

The spelling of 6456642466545 in words is "six trillion, four hundred fifty-six billion, six hundred forty-two million, four hundred sixty-six thousand, five hundred forty-five".