617968637853 has 64 divisors (see below), whose sum is σ = 971734106112. Its totient is φ = 342001336320.

The previous prime is 617968637837. The next prime is 617968637863. The reversal of 617968637853 is 358736869716.

It is not a de Polignac number, because 617968637853 - 2⁴ = 617968637837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (617968637863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 51745863 + ... + 51757803.

It is an arithmetic number, because the mean of its divisors is an integer number (15183345408).

Almost surely, 2^617968637853 is an apocalyptic number.

It is an amenable number.

617968637853 is a deficient number, since it is larger than the sum of its proper divisors (353765468259).

617968637853 is a wasteful number, since it uses less digits than its factorization.

617968637853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12474.

The product of its digits is 274337280, while the sum is 69.

The spelling of 617968637853 in words is "six hundred seventeen billion, nine hundred sixty-eight million, six hundred thirty-seven thousand, eight hundred fifty-three".