655522110400 has 84 divisors (see below), whose sum is σ = 1614919919760. Its totient is φ = 261895782400.

The previous prime is 655522110389. The next prime is 655522110413. The reversal of 655522110400 is 4011225556.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1098240 + ... + 1586560.

It is an arithmetic number, because the mean of its divisors is an integer number (19225237140).

Almost surely, 2^655522110400 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 655522110400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (807459959880).

655522110400 is an abundant number, since it is smaller than the sum of its proper divisors (959397809360).

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

655522110400 is a wasteful number, since it uses less digits than its factorization.

655522110400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489182 (or 489167 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 655522110400 its reverse (4011225556), we get a palindrome (659533335956).

The spelling of 655522110400 in words is "six hundred fifty-five billion, five hundred twenty-two million, one hundred ten thousand, four hundred".