655442101244556 has 192 divisors, whose sum is σ = 1848327028248960. Its totient is φ = 200023095582720.

The previous prime is 655442101244551. The next prime is 655442101244587.

655442101244556 is a `hidden beast` number, since 6 + 5 + 5 + 4 + 42 + 1 + 0 + 1 + 2 + 44 + 556 = 666.

655442101244556 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (655442101244551) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 280959966 + ... + 283283226.

It is an arithmetic number, because the mean of its divisors is an integer number (9626703272130).

Almost surely, 2^{655442101244556} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655442101244556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (924163514124480).

655442101244556 is an abundant number, since it is smaller than the sum of its proper divisors (1192884927004404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

655442101244556 is a wasteful number, since it uses less digits than its factorization.

655442101244556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2327481 (or 2327473 counting only the distinct ones).

The product of its (nonzero) digits is 23040000, while the sum is 54.

It can be divided in two parts, 65544210 and 1244556, that added together give a palindrome (66788766).

The spelling of 655442101244556 in words is "six hundred fifty-five trillion, four hundred forty-two billion, one hundred one million, two hundred forty-four thousand, five hundred fifty-six".