655573000400 has 60 divisors (see below), whose sum is σ = 1617582119532. Its totient is φ = 255141918720.

The previous prime is 655573000391. The next prime is 655573000403. The reversal of 655573000400 is 4000375556.

It can be written as a sum of positive squares in 6 ways, for example, as 53812864576 + 601760135824 = 231976^2 + 775732^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655573000403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22132937 + ... + 22162536.

Almost surely, 2^655573000400 is an apocalyptic number.

It is an amenable number.

655573000400 is an abundant number, since it is smaller than the sum of its proper divisors (962009119132).

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

655573000400 is a wasteful number, since it uses less digits than its factorization.

655573000400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44295528 (or 44295517 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 35.

Adding to 655573000400 its reverse (4000375556), we get a palindrome (659573375956).

The spelling of 655573000400 in words is "six hundred fifty-five billion, five hundred seventy-three million, four hundred", and thus it is an aban number.