657630425079 has 12 divisors (see below), whose sum is σ = 955598703696. Its totient is φ = 435795011232.

The previous prime is 657630425051. The next prime is 657630425099. The reversal of 657630425079 is 970524036756.

657630425079 is a `hidden beast` number, since 65 + 7 + 6 + 30 + 42 + 507 + 9 = 666.

It is not a de Polignac number, because 657630425079 - 2⁵ = 657630425047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (657630425029) 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, 218771094 + ... + 218774099.

It is an arithmetic number, because the mean of its divisors is an integer number (79633225308).

Almost surely, 2^657630425079 is an apocalyptic number.

657630425079 is a deficient number, since it is larger than the sum of its proper divisors (297968278617).

657630425079 is a wasteful number, since it uses less digits than its factorization.

657630425079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437545366 (or 437545363 counting only the distinct ones).

The product of its (nonzero) digits is 9525600, while the sum is 54.

The spelling of 657630425079 in words is "six hundred fifty-seven billion, six hundred thirty million, four hundred twenty-five thousand, seventy-nine".