656481282184655 has 32 divisors (see below), whose sum is σ = 789269761843200. Its totient is φ = 524191333370112.

The previous prime is 656481282184531. The next prime is 656481282184669. The reversal of 656481282184655 is 556481282184656.

It is a cyclic number.

It is not a de Polignac number, because 656481282184655 - 2³⁰ = 656480208442831 is a prime.

It is a super-3 number, since 3×656481282184655³ (a number of 45 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (71) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53973625604 + ... + 53973637766.

It is an arithmetic number, because the mean of its divisors is an integer number (24664680057600).

Almost surely, 2^{656481282184655} is an apocalyptic number.

656481282184655 is a deficient number, since it is larger than the sum of its proper divisors (132788479658545).

656481282184655 is a wasteful number, since it uses less digits than its factorization.

656481282184655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22103.

The product of its digits is 884736000, while the sum is 71.

Subtracting from 656481282184655 its reverse (556481282184656), we obtain a palindrome (99999999999999).

The spelling of 656481282184655 in words is "six hundred fifty-six trillion, four hundred eighty-one billion, two hundred eighty-two million, one hundred eighty-four thousand, six hundred fifty-five".