678283569853 has 4 divisors (see below), whose sum is σ = 678310860220. Its totient is φ = 678256279488.

The previous prime is 678283569829. The next prime is 678283569863. The reversal of 678283569853 is 358965382876.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 325764694564 + 352518875289 = 570758^2 + 593733^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-678283569853 is a prime.

It is a super-2 number, since 2×678283569853² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678283569863) 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, 13607868 + ... + 13657621.

It is an arithmetic number, because the mean of its divisors is an integer number (169577715055).

Almost surely, 2^678283569853 is an apocalyptic number.

It is an amenable number.

678283569853 is a deficient number, since it is larger than the sum of its proper divisors (27290367).

678283569853 is a wasteful number, since it uses less digits than its factorization.

678283569853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27290366.

The product of its digits is 522547200, while the sum is 70.

The spelling of 678283569853 in words is "six hundred seventy-eight billion, two hundred eighty-three million, five hundred sixty-nine thousand, eight hundred fifty-three".