655136056400 has 180 divisors, whose sum is σ = 1856729956320. Its totient is φ = 221453971200.

The previous prime is 655136056391. The next prime is 655136056423. The reversal of 655136056400 is 4650631556.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1156211 + ... + 1626989.

It is an arithmetic number, because the mean of its divisors is an integer number (10315166424).

Almost surely, 2^655136056400 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 655136056400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (928364978160).

655136056400 is an abundant number, since it is smaller than the sum of its proper divisors (1201593899920).

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

655136056400 is a wasteful number, since it uses less digits than its factorization.

655136056400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470882 (or 470864 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 41.

Adding to 655136056400 its reverse (4650631556), we get a palindrome (659786687956).

The spelling of 655136056400 in words is "six hundred fifty-five billion, one hundred thirty-six million, fifty-six thousand, four hundred".