20535522055 has 16 divisors (see below), whose sum is σ = 26076225024. Its totient is φ = 15492806560.

The previous prime is 20535522041. The next prime is 20535522127. The reversal of 20535522055 is 55022553502.

It is not a de Polignac number, because 20535522055 - 2⁹ = 20535521543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20535522055.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1249369 + ... + 1265698.

It is an arithmetic number, because the mean of its divisors is an integer number (1629764064).

Almost surely, 2^20535522055 is an apocalyptic number.

20535522055 is a deficient number, since it is larger than the sum of its proper divisors (5540702969).

20535522055 is a wasteful number, since it uses less digits than its factorization.

20535522055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2515166.

The product of its (nonzero) digits is 75000, while the sum is 34.

The spelling of 20535522055 in words is "twenty billion, five hundred thirty-five million, five hundred twenty-two thousand, fifty-five".