657630425055 has 32 divisors (see below), whose sum is σ = 1058796343296. Its totient is φ = 348540879744.

The previous prime is 657630425051. The next prime is 657630425099. The reversal of 657630425055 is 550524036756.

It is not a de Polignac number, because 657630425055 - 2² = 657630425051 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 657630424995 and 657630425013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (657630425051) 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, 32002114 + ... + 32022656.

It is an arithmetic number, because the mean of its divisors is an integer number (33087385728).

Almost surely, 2^657630425055 is an apocalyptic number.

657630425055 is a deficient number, since it is larger than the sum of its proper divisors (401165918241).

657630425055 is a wasteful number, since it uses less digits than its factorization.

657630425055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33807.

The product of its (nonzero) digits is 3780000, while the sum is 48.

The spelling of 657630425055 in words is "six hundred fifty-seven billion, six hundred thirty million, four hundred twenty-five thousand, fifty-five".