648959959846 has 16 divisors (see below), whose sum is σ = 1061966206800. Its totient is φ = 294972986880.

The previous prime is 648959959831. The next prime is 648959959871.

648959959846 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×648959959846² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 648959959846.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343450 + ... + 1189906.

It is an arithmetic number, because the mean of its divisors is an integer number (66372887925).

Almost surely, 2^648959959846 is an apocalyptic number.

648959959846 is a deficient number, since it is larger than the sum of its proper divisors (413006246954).

648959959846 is a wasteful number, since it uses less digits than its factorization.

648959959846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881319.

The product of its digits is 6046617600, while the sum is 82.

The spelling of 648959959846 in words is "six hundred forty-eight billion, nine hundred fifty-nine million, nine hundred fifty-nine thousand, eight hundred forty-six".