657812495012 has 12 divisors (see below), whose sum is σ = 1151864103936. Its totient is φ = 328708465320.

The previous prime is 657812495009. The next prime is 657812495017. The reversal of 657812495012 is 210594218756.

It is not an unprimeable number, because it can be changed into a prime (657812495017) 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, 49438064 + ... + 49451367.

It is an arithmetic number, because the mean of its divisors is an integer number (95988675328).

Almost surely, 2^657812495012 is an apocalyptic number.

It is an amenable number.

657812495012 is a deficient number, since it is larger than the sum of its proper divisors (494051608924).

657812495012 is a wasteful number, since it uses less digits than its factorization.

657812495012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98891098 (or 98891096 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 50.

The spelling of 657812495012 in words is "six hundred fifty-seven billion, eight hundred twelve million, four hundred ninety-five thousand, twelve".