655361532504 has 128 divisors (see below), whose sum is σ = 2081749824000. Its totient is φ = 187134820992.

The previous prime is 655361532473. The next prime is 655361532509. The reversal of 655361532504 is 405235163556.

655361532504 is a `hidden beast` number, since 6 + 5 + 5 + 3 + 61 + 532 + 50 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 655361532504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655361532509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2431807 + ... + 2687825.

It is an arithmetic number, because the mean of its divisors is an integer number (16263670500).

Almost surely, 2^655361532504 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 655361532504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1040874912000).

655361532504 is an abundant number, since it is smaller than the sum of its proper divisors (1426388291496).

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

655361532504 is a wasteful number, since it uses less digits than its factorization.

655361532504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257734 (or 257724 counting only the distinct ones).

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

The spelling of 655361532504 in words is "six hundred fifty-five billion, three hundred sixty-one million, five hundred thirty-two thousand, five hundred four".