20112555155 has 16 divisors (see below), whose sum is σ = 30090472704. Its totient is φ = 12537696480.

The previous prime is 20112555139. The next prime is 20112555157. The reversal of 20112555155 is 55155521102.

It is not a de Polignac number, because 20112555155 - 2⁴ = 20112555139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20112555157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26119817 + ... + 26120586.

It is an arithmetic number, because the mean of its divisors is an integer number (1880654544).

Almost surely, 2^20112555155 is an apocalyptic number.

20112555155 is a deficient number, since it is larger than the sum of its proper divisors (9977917549).

20112555155 is a wasteful number, since it uses less digits than its factorization.

20112555155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52240426.

The product of its (nonzero) digits is 12500, while the sum is 32.

The spelling of 20112555155 in words is "twenty billion, one hundred twelve million, five hundred fifty-five thousand, one hundred fifty-five".