506556505155 has 32 divisors (see below), whose sum is σ = 838710273600. Its totient is φ = 260762890752.

The previous prime is 506556505153. The next prime is 506556505159. The reversal of 506556505155 is 551505655605.

It is not a de Polignac number, because 506556505155 - 2¹ = 506556505153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (506556505153) 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, 1165137 + ... + 1539693.

It is an arithmetic number, because the mean of its divisors is an integer number (26209696050).

Almost surely, 2^506556505155 is an apocalyptic number.

506556505155 is a deficient number, since it is larger than the sum of its proper divisors (332153768445).

506556505155 is a wasteful number, since it uses less digits than its factorization.

506556505155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377703.

The product of its (nonzero) digits is 2812500, while the sum is 48.

The spelling of 506556505155 in words is "five hundred six billion, five hundred fifty-six million, five hundred five thousand, one hundred fifty-five".