648212788249 has 8 divisors (see below), whose sum is σ = 700349175680. Its totient is φ = 596401238736.

The previous prime is 648212788229. The next prime is 648212788253. The reversal of 648212788249 is 942887212846.

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

It is a cyclic number.

It is not a de Polignac number, because 648212788249 - 2¹³ = 648212780057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648212788229) 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, 81205329 + ... + 81213310.

It is an arithmetic number, because the mean of its divisors is an integer number (87543646960).

Almost surely, 2^648212788249 is an apocalyptic number.

It is an amenable number.

648212788249 is a deficient number, since it is larger than the sum of its proper divisors (52136387431).

648212788249 is a wasteful number, since it uses less digits than its factorization.

648212788249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162418959.

The product of its digits is 24772608, while the sum is 61.

The spelling of 648212788249 in words is "six hundred forty-eight billion, two hundred twelve million, seven hundred eighty-eight thousand, two hundred forty-nine".