655361532505 has 4 divisors (see below), whose sum is σ = 786433839012. Its totient is φ = 524289226000.

The previous prime is 655361532473. The next prime is 655361532509. The reversal of 655361532505 is 505235163556.

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 371105145856 + 284256386649 = 609184^2 + 533157^2 .

It is not a de Polignac number, because 655361532505 - 2⁵ = 655361532473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655361532509) 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, 65536153246 + ... + 65536153255.

It is an arithmetic number, because the mean of its divisors is an integer number (196608459753).

Almost surely, 2^655361532505 is an apocalyptic number.

It is an amenable number.

655361532505 is a deficient number, since it is larger than the sum of its proper divisors (131072306507).

655361532505 is a wasteful number, since it uses less digits than its factorization.

655361532505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131072306506.

The product of its (nonzero) digits is 2025000, while the sum is 46.

The spelling of 655361532505 in words is "six hundred fifty-five billion, three hundred sixty-one million, five hundred thirty-two thousand, five hundred five".