648579643269 has 8 divisors (see below), whose sum is σ = 864779947200. Its totient is φ = 432382884096.

The previous prime is 648579643259. The next prime is 648579643273. The reversal of 648579643269 is 962346975846.

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

It is not a de Polignac number, because 648579643269 - 2¹¹ = 648579641221 is a prime.

It is a super-2 number, since 2×648579643269² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648579643259) 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, 424969 + ... + 1215630.

It is an arithmetic number, because the mean of its divisors is an integer number (108097493400).

Almost surely, 2^648579643269 is an apocalyptic number.

It is an amenable number.

648579643269 is a deficient number, since it is larger than the sum of its proper divisors (216200303931).

648579643269 is a wasteful number, since it uses less digits than its factorization.

648579643269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772379.

The product of its digits is 470292480, while the sum is 69.

The spelling of 648579643269 in words is "six hundred forty-eight billion, five hundred seventy-nine million, six hundred forty-three thousand, two hundred sixty-nine".