20617045633 has 16 divisors (see below), whose sum is σ = 21338873280. Its totient is φ = 19908098496.

The previous prime is 20617045567. The next prime is 20617045637. The reversal of 20617045633 is 33654071602.

It is a cyclic number.

It is not a de Polignac number, because 20617045633 - 2⁹ = 20617045121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20617045592 and 20617045601.

It is not an unprimeable number, because it can be changed into a prime (20617045637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5605191 + ... + 5608867.

It is an arithmetic number, because the mean of its divisors is an integer number (1333679580).

Almost surely, 2^20617045633 is an apocalyptic number.

It is an amenable number.

20617045633 is a deficient number, since it is larger than the sum of its proper divisors (721827647).

20617045633 is a wasteful number, since it uses less digits than its factorization.

20617045633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5376.

The product of its (nonzero) digits is 90720, while the sum is 37.

The spelling of 20617045633 in words is "twenty billion, six hundred seventeen million, forty-five thousand, six hundred thirty-three".