657653604049 has 8 divisors (see below), whose sum is σ = 709855657280. Its totient is φ = 605682024336.

The previous prime is 657653604029. The next prime is 657653604061. The reversal of 657653604049 is 940406356756.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 657653604049 - 2¹⁹ = 657653079761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (657653604029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57612447 + ... + 57623860.

It is an arithmetic number, because the mean of its divisors is an integer number (88731957160).

Almost surely, 2^657653604049 is an apocalyptic number.

It is an amenable number.

657653604049 is a deficient number, since it is larger than the sum of its proper divisors (52202053231).

657653604049 is a wasteful number, since it uses less digits than its factorization.

657653604049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115236759.

The product of its (nonzero) digits is 16329600, while the sum is 55.

The spelling of 657653604049 in words is "six hundred fifty-seven billion, six hundred fifty-three million, six hundred four thousand, forty-nine".