657363982641 has 4 divisors (see below), whose sum is σ = 876485310192. Its totient is φ = 438242655092.

The previous prime is 657363982621. The next prime is 657363982657. The reversal of 657363982641 is 146289363756.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 657363982641 - 2¹¹ = 657363980593 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (657363982621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109560663771 + ... + 109560663776.

It is an arithmetic number, because the mean of its divisors is an integer number (219121327548).

Almost surely, 2^657363982641 is an apocalyptic number.

It is an amenable number.

657363982641 is a deficient number, since it is larger than the sum of its proper divisors (219121327551).

657363982641 is a wasteful number, since it uses less digits than its factorization.

657363982641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219121327550.

The product of its digits is 39191040, while the sum is 60.

The spelling of 657363982641 in words is "six hundred fifty-seven billion, three hundred sixty-three million, nine hundred eighty-two thousand, six hundred forty-one".