133568517664 has 24 divisors (see below), whose sum is σ = 263860522380. Its totient is φ = 66556321536.

The previous prime is 133568517647. The next prime is 133568517703. The reversal of 133568517664 is 466715865331.

It can be written as a sum of positive squares in 2 ways, for example, as 125556835600 + 8011682064 = 354340^2 + 89508^2 .

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, 7113519 + ... + 7132270.

Almost surely, 2^133568517664 is an apocalyptic number.

It is an amenable number.

133568517664 is a deficient number, since it is larger than the sum of its proper divisors (130292004716).

133568517664 is a wasteful number, since it uses less digits than its factorization.

133568517664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14246092 (or 14246084 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 55.

The spelling of 133568517664 in words is "one hundred thirty-three billion, five hundred sixty-eight million, five hundred seventeen thousand, six hundred sixty-four".