657112726132 has 6 divisors (see below), whose sum is σ = 1149947270738. Its totient is φ = 328556363064.

The previous prime is 657112726093. The next prime is 657112726157. The reversal of 657112726132 is 231627211756.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 547443131236 + 109669594896 = 739894^2 + 331164^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82139090763 + ... + 82139090770.

Almost surely, 2^657112726132 is an apocalyptic number.

It is an amenable number.

657112726132 is a deficient number, since it is larger than the sum of its proper divisors (492834544606).

657112726132 is a wasteful number, since it uses less digits than its factorization.

657112726132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164278181537 (or 164278181535 counting only the distinct ones).

The product of its digits is 211680, while the sum is 43.

Adding to 657112726132 its reverse (231627211756), we get a palindrome (888739937888).

The spelling of 657112726132 in words is "six hundred fifty-seven billion, one hundred twelve million, seven hundred twenty-six thousand, one hundred thirty-two".