657106947142 has 8 divisors (see below), whose sum is σ = 989218762416. Its totient is φ = 327367359672.

The previous prime is 657106947121. The next prime is 657106947143. The reversal of 657106947142 is 241749601756.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 657106947142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (657106947143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 593056258 + ... + 593057365.

It is an arithmetic number, because the mean of its divisors is an integer number (123652345302).

Almost surely, 2^657106947142 is an apocalyptic number.

657106947142 is a deficient number, since it is larger than the sum of its proper divisors (332111815274).

657106947142 is a wasteful number, since it uses less digits than its factorization.

657106947142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186113902.

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 657106947142 in words is "six hundred fifty-seven billion, one hundred six million, nine hundred forty-seven thousand, one hundred forty-two".