20611534055 has 16 divisors (see below), whose sum is σ = 28367855424. Its totient is φ = 14083319040.

The previous prime is 20611534003. The next prime is 20611534091. The reversal of 20611534055 is 55043511602.

It is not a de Polignac number, because 20611534055 - 2²⁶ = 20544425191 is a prime.

It is a super-2 number, since 2×20611534055² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 1038032 + ... + 1057701.

It is an arithmetic number, because the mean of its divisors is an integer number (1772990964).

Almost surely, 2^20611534055 is an apocalyptic number.

20611534055 is a deficient number, since it is larger than the sum of its proper divisors (7756321369).

20611534055 is a wasteful number, since it uses less digits than its factorization.

20611534055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096026.

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 20611534055 in words is "twenty billion, six hundred eleven million, five hundred thirty-four thousand, fifty-five".