20055503555 has 16 divisors (see below), whose sum is σ = 24242652000. Its totient is φ = 15927168000.

The previous prime is 20055503521. The next prime is 20055503597. The reversal of 20055503555 is 55530555002.

It is not a de Polignac number, because 20055503555 - 2¹⁶ = 20055438019 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1400180 + ... + 1414430.

It is an arithmetic number, because the mean of its divisors is an integer number (1515165750).

Almost surely, 2^20055503555 is an apocalyptic number.

20055503555 is a deficient number, since it is larger than the sum of its proper divisors (4187148445).

20055503555 is a wasteful number, since it uses less digits than its factorization.

20055503555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16294.

The product of its (nonzero) digits is 93750, while the sum is 35.

The spelling of 20055503555 in words is "twenty billion, fifty-five million, five hundred three thousand, five hundred fifty-five".