654867396853 has 4 divisors (see below), whose sum is σ = 670839772428. Its totient is φ = 638895021280.

The previous prime is 654867396851. The next prime is 654867396857. The reversal of 654867396853 is 358693768456.

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 142901388529 + 511966008324 = 378023^2 + 715518^2 .

It is a cyclic number.

It is not a de Polignac number, because 654867396853 - 2¹ = 654867396851 is a prime.

It is a super-2 number, since 2×654867396853² (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 (654867396851) 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, 7986187726 + ... + 7986187807.

It is an arithmetic number, because the mean of its divisors is an integer number (167709943107).

Almost surely, 2^654867396853 is an apocalyptic number.

It is an amenable number.

654867396853 is a deficient number, since it is larger than the sum of its proper divisors (15972375575).

654867396853 is a wasteful number, since it uses less digits than its factorization.

654867396853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15972375574.

The product of its digits is 783820800, while the sum is 70.

The spelling of 654867396853 in words is "six hundred fifty-four billion, eight hundred sixty-seven million, three hundred ninety-six thousand, eight hundred fifty-three".