655506555061 has 16 divisors (see below), whose sum is σ = 665801424000. Its totient is φ = 645242169600.

The previous prime is 655506555059. The next prime is 655506555071. The reversal of 655506555061 is 160555605556.

It is a cyclic number.

It is not a de Polignac number, because 655506555061 - 2¹ = 655506555059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 655506554996 and 655506555014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655506555071) 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 15 ways as a sum of consecutive naturals, for example, 190055265 + ... + 190058713.

It is an arithmetic number, because the mean of its divisors is an integer number (41612589000).

Almost surely, 2^655506555061 is an apocalyptic number.

It is an amenable number.

655506555061 is a deficient number, since it is larger than the sum of its proper divisors (10294868939).

655506555061 is a wasteful number, since it uses less digits than its factorization.

655506555061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7020.

The product of its (nonzero) digits is 3375000, while the sum is 49.

The spelling of 655506555061 in words is "six hundred fifty-five billion, five hundred six million, five hundred fifty-five thousand, sixty-one".