649713456205 has 8 divisors (see below), whose sum is σ = 850533979104. Its totient is φ = 472518877200.

The previous prime is 649713456193. The next prime is 649713456239. The reversal of 649713456205 is 502654317946.

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

It is not a de Polignac number, because 649713456205 - 2³⁵ = 615353717837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5906485911 + ... + 5906486020.

It is an arithmetic number, because the mean of its divisors is an integer number (106316747388).

Almost surely, 2^649713456205 is an apocalyptic number.

It is an amenable number.

649713456205 is a deficient number, since it is larger than the sum of its proper divisors (200820522899).

649713456205 is a wasteful number, since it uses less digits than its factorization.

649713456205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11812971947.

The product of its (nonzero) digits is 5443200, while the sum is 52.

The spelling of 649713456205 in words is "six hundred forty-nine billion, seven hundred thirteen million, four hundred fifty-six thousand, two hundred five".