20833893663 has 16 divisors (see below), whose sum is σ = 30479020416. Its totient is φ = 12553612640.

The previous prime is 20833893599. The next prime is 20833893713. The reversal of 20833893663 is 36639833802.

It is a cyclic number.

It is not a de Polignac number, because 20833893663 - 2⁶ = 20833893599 is a prime.

It is a super-2 number, since 2×20833893663² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20833894663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1818945 + ... + 1830362.

It is an arithmetic number, because the mean of its divisors is an integer number (1904938776).

Almost surely, 2^20833893663 is an apocalyptic number.

20833893663 is a deficient number, since it is larger than the sum of its proper divisors (9645126753).

20833893663 is a wasteful number, since it uses less digits than its factorization.

20833893663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3649494.

The product of its (nonzero) digits is 3359232, while the sum is 51.

The spelling of 20833893663 in words is "twenty billion, eight hundred thirty-three million, eight hundred ninety-three thousand, six hundred sixty-three".