655555554444445 has 8 divisors (see below), whose sum is σ = 786666967300440. Its totient is φ = 524444242244160.

The previous prime is 655555554444403. The next prime is 655555554444503. The reversal of 655555554444445 is 544444455555556.

It can be written as a sum of positive squares in 4 ways, for example, as 224080152060249 + 431475402384196 = 14969307^2 + 20771986^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 655555554444445 - 2²⁵ = 655555520890013 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10005546 + ... + 37566235.

It is an arithmetic number, because the mean of its divisors is an integer number (98333370912555).

Almost surely, 2^{655555554444445} is an apocalyptic number.

It is an amenable number.

655555554444445 is a deficient number, since it is larger than the sum of its proper divisors (131111412855995).

655555554444445 is a wasteful number, since it uses less digits than its factorization.

655555554444445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50327855.

The product of its digits is 9600000000, while the sum is 70.

The spelling of 655555554444445 in words is "six hundred fifty-five trillion, five hundred fifty-five billion, five hundred fifty-four million, four hundred forty-four thousand, four hundred forty-five".