655020624140 has 48 divisors (see below), whose sum is σ = 1377311330304. Its totient is φ = 261671678400.

The previous prime is 655020624131. The next prime is 655020624157. The reversal of 655020624140 is 41426020556.

It is a self number, because there is not a number n which added to its sum of digits gives 655020624140.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104449205 + ... + 104455475.

It is an arithmetic number, because the mean of its divisors is an integer number (28693986048).

Almost surely, 2^655020624140 is an apocalyptic number.

It is an amenable number.

655020624140 is an abundant number, since it is smaller than the sum of its proper divisors (722290706164).

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

655020624140 is a wasteful number, since it uses less digits than its factorization.

655020624140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12158 (or 12156 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 655020624140 its reverse (41426020556), we get a palindrome (696446644696).

The spelling of 655020624140 in words is "six hundred fifty-five billion, twenty million, six hundred twenty-four thousand, one hundred forty".