655466525661 has 8 divisors (see below), whose sum is σ = 890445091680. Its totient is φ = 428732821712.

The previous prime is 655466525657. The next prime is 655466525683. The reversal of 655466525661 is 166525664556.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 655466525661 - 2² = 655466525657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655466525641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2061215331 + ... + 2061215648.

It is an arithmetic number, because the mean of its divisors is an integer number (111305636460).

Almost surely, 2^655466525661 is an apocalyptic number.

It is an amenable number.

655466525661 is a deficient number, since it is larger than the sum of its proper divisors (234978566019).

655466525661 is a wasteful number, since it uses less digits than its factorization.

655466525661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4122431035.

The product of its digits is 38880000, while the sum is 57.

The spelling of 655466525661 in words is "six hundred fifty-five billion, four hundred sixty-six million, five hundred twenty-five thousand, six hundred sixty-one".