655556322213 has 48 divisors (see below), whose sum is σ = 1074921120000. Its totient is φ = 381654198144.

The previous prime is 655556322139. The next prime is 655556322221. The reversal of 655556322213 is 312223655556.

It is a happy number.

655556322213 is a `hidden beast` number, since 6 + 5 + 5 + 5 + 5 + 632 + 2 + 2 + 1 + 3 = 666.

It is not a de Polignac number, because 655556322213 - 2⁸ = 655556321957 is a prime.

It is a super-3 number, since 3×655556322213³ (a number of 36 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655556321213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1393263 + ... + 1803411.

It is an arithmetic number, because the mean of its divisors is an integer number (22394190000).

Almost surely, 2^655556322213 is an apocalyptic number.

It is an amenable number.

655556322213 is a deficient number, since it is larger than the sum of its proper divisors (419364797787).

655556322213 is a wasteful number, since it uses less digits than its factorization.

655556322213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410906 (or 410903 counting only the distinct ones).

The product of its digits is 1620000, while the sum is 45.

Adding to 655556322213 its reverse (312223655556), we get a palindrome (967779977769).

The spelling of 655556322213 in words is "six hundred fifty-five billion, five hundred fifty-six million, three hundred twenty-two thousand, two hundred thirteen".