657690013245 has 32 divisors (see below), whose sum is σ = 1107775889280. Its totient is φ = 332280299520.

The previous prime is 657690013243. The next prime is 657690013273. The reversal of 657690013245 is 542310096756.

It is not a de Polignac number, because 657690013245 - 2¹ = 657690013243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 657690013194 and 657690013203.

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 polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3819405 + ... + 3987885.

It is an arithmetic number, because the mean of its divisors is an integer number (34617996540).

Almost surely, 2^657690013245 is an apocalyptic number.

It is an amenable number.

657690013245 is a deficient number, since it is larger than the sum of its proper divisors (450085876035).

657690013245 is a wasteful number, since it uses less digits than its factorization.

657690013245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182205.

The product of its (nonzero) digits is 1360800, while the sum is 48.

The spelling of 657690013245 in words is "six hundred fifty-seven billion, six hundred ninety million, thirteen thousand, two hundred forty-five".