655572102005 has 4 divisors (see below), whose sum is σ = 786686522412. Its totient is φ = 524457681600.

The previous prime is 655572102001. The next prime is 655572102011. The reversal of 655572102005 is 500201275556.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 241708906321 + 413863195684 = 491639^2 + 643322^2 .

It is not a de Polignac number, because 655572102005 - 2² = 655572102001 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 655572102005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655572102001) 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 3 ways as a sum of consecutive naturals, for example, 65557210196 + ... + 65557210205.

It is an arithmetic number, because the mean of its divisors is an integer number (196671630603).

Almost surely, 2^655572102005 is an apocalyptic number.

It is an amenable number.

655572102005 is a deficient number, since it is larger than the sum of its proper divisors (131114420407).

655572102005 is a wasteful number, since it uses less digits than its factorization.

655572102005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131114420406.

The product of its (nonzero) digits is 105000, while the sum is 38.

The spelling of 655572102005 in words is "six hundred fifty-five billion, five hundred seventy-two million, one hundred two thousand, five".