657690013244 has 12 divisors (see below), whose sum is σ = 1255590025368. Its totient is φ = 298950006000.

The previous prime is 657690013243. The next prime is 657690013273. The reversal of 657690013244 is 442310096756.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (657690013243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7473750107 + ... + 7473750194.

It is an arithmetic number, because the mean of its divisors is an integer number (104632502114).

Almost surely, 2^657690013244 is an apocalyptic number.

It is an amenable number.

657690013244 is a deficient number, since it is larger than the sum of its proper divisors (597900012124).

657690013244 is a wasteful number, since it uses less digits than its factorization.

657690013244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14947500316 (or 14947500314 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 47.

The spelling of 657690013244 in words is "six hundred fifty-seven billion, six hundred ninety million, thirteen thousand, two hundred forty-four".