651716126605 has 8 divisors (see below), whose sum is σ = 789652161792. Its totient is φ = 516311028048.

The previous prime is 651716126591. The next prime is 651716126609. The reversal of 651716126605 is 506621617156.

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 651716126605 - 2¹⁷ = 651715995533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651716126609) 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, 632733589 + ... + 632734618.

It is an arithmetic number, because the mean of its divisors is an integer number (98706520224).

Almost surely, 2^651716126605 is an apocalyptic number.

It is an amenable number.

651716126605 is a deficient number, since it is larger than the sum of its proper divisors (137936035187).

651716126605 is a wasteful number, since it uses less digits than its factorization.

651716126605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265468315.

The product of its (nonzero) digits is 453600, while the sum is 46.

The spelling of 651716126605 in words is "six hundred fifty-one billion, seven hundred sixteen million, one hundred twenty-six thousand, six hundred five".