20553835023 has 32 divisors (see below), whose sum is σ = 33643123200. Its totient is φ = 12335799168.

The previous prime is 20553835007. The next prime is 20553835031. The reversal of 20553835023 is 32053835502.

20553835023 is a `hidden beast` number, since 2 + 0 + 553 + 83 + 5 + 0 + 23 = 666.

It is not a de Polignac number, because 20553835023 - 2⁴ = 20553835007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20553835073) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 962913 + ... + 984026.

It is an arithmetic number, because the mean of its divisors is an integer number (1051347600).

Almost surely, 2^20553835023 is an apocalyptic number.

20553835023 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20553835023 is a deficient number, since it is larger than the sum of its proper divisors (13089288177).

20553835023 is a wasteful number, since it uses less digits than its factorization.

20553835023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946988 (or 1946982 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The spelling of 20553835023 in words is "twenty billion, five hundred fifty-three million, eight hundred thirty-five thousand, twenty-three".