655143623928 has 96 divisors (see below), whose sum is σ = 1899420956160. Its totient is φ = 211336633440.

The previous prime is 655143623923. The next prime is 655143623941. The reversal of 655143623928 is 829326341556.

It is a happy number.

655143623928 is a `hidden beast` number, since 6 + 5 + 5 + 1 + 4 + 3 + 623 + 9 + 2 + 8 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655143623923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5375350 + ... + 5495877.

It is an arithmetic number, because the mean of its divisors is an integer number (19785634960).

Almost surely, 2^655143623928 is an apocalyptic number.

It is an amenable number.

655143623928 is an abundant number, since it is smaller than the sum of its proper divisors (1244277332232).

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

655143623928 is a wasteful number, since it uses less digits than its factorization.

655143623928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10871279 (or 10871263 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 54.

The spelling of 655143623928 in words is "six hundred fifty-five billion, one hundred forty-three million, six hundred twenty-three thousand, nine hundred twenty-eight".