648505505846 has 8 divisors (see below), whose sum is σ = 1061190827784. Its totient is φ = 294775229920.

The previous prime is 648505505833. The next prime is 648505505863.

648505505846 is nontrivially palindromic in base 10.

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

It is a super-2 number, since 2×648505505846² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 648505505791 and 648505505800.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 14738761475 + ... + 14738761518.

It is an arithmetic number, because the mean of its divisors is an integer number (132648853473).

Almost surely, 2^648505505846 is an apocalyptic number.

648505505846 is a deficient number, since it is larger than the sum of its proper divisors (412685321938).

648505505846 is a wasteful number, since it uses less digits than its factorization.

648505505846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29477523006.

The product of its (nonzero) digits is 23040000, while the sum is 56.

The spelling of 648505505846 in words is "six hundred forty-eight billion, five hundred five million, five hundred five thousand, eight hundred forty-six".