20604560393 has 16 divisors (see below), whose sum is σ = 21755428800. Its totient is φ = 19460450880.

The previous prime is 20604560377. The next prime is 20604560399. The reversal of 20604560393 is 39306540602.

It is a cyclic number.

It is not a de Polignac number, because 20604560393 - 2⁴ = 20604560377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20604560399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12773255 + ... + 12774867.

It is an arithmetic number, because the mean of its divisors is an integer number (1359714300).

Almost surely, 2^20604560393 is an apocalyptic number.

It is an amenable number.

20604560393 is a deficient number, since it is larger than the sum of its proper divisors (1150868407).

20604560393 is a wasteful number, since it uses less digits than its factorization.

20604560393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3272.

The product of its (nonzero) digits is 116640, while the sum is 38.

The spelling of 20604560393 in words is "twenty billion, six hundred four million, five hundred sixty thousand, three hundred ninety-three".